Best Royal Mail Large Letter Size Guide of 2026

Last updated on 10/04/2026
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1
Glamified - Mail PiP Letter Size Guide Ruler, Letter & Parcel Size Pricing in Proportion Charge Guide with Ruler Portable and Durable
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Glamified - Mail PiP Letter Size Guide Ruler, Letter & Parcel Size Pricing in Proportion Charge Guide with Ruler Portable and Durable

Glamified , glam
Why we love it
  • Accurate price estimation made easy.
  • Durable and lightweight for convenience.
  • Perfect for home and warehouse use.
Main Highlights
  • The new method for sending small letters, large letters, and packets is called Pricing in Proportion (PiP). It correctly measures your packages so you don't have to worry about spending more because you can measure the dimensions of your box.
  • The Size Guide Ruler is made from excellent quality, water-resistant Stainless steel lifetime warranty and is very durable as well as lightweight, making it easy to carry and use daily.
  • it measures the given package dimension for accurate reading and price estimation. It can be used for large and small letters or package measurements.
  • Its strength and light weight make it perfect for usage at home or in a warehouse.
Show More
9.8
Exceptional
Product image 1
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Product image 4
9.8
Exceptional
Glamified , glam

Glamified - Mail PiP Letter Size Guide Ruler, Letter & Parcel Size Pricing in Proportion Charge Guide with Ruler Portable and Durable

Why we love it
  • Accurate price estimation made easy.
  • Durable and lightweight for convenience.
  • Perfect for home and warehouse use.
Main Highlights
  • The new method for sending small letters, large letters, and packets is called Pricing in Proportion (PiP). It correctly measures your packages so you don't have to worry about spending more because you can measure the dimensions of your box.
  • The Size Guide Ruler is made from excellent quality, water-resistant Stainless steel lifetime warranty and is very durable as well as lightweight, making it easy to carry and use daily.
  • it measures the given package dimension for accurate reading and price estimation. It can be used for large and small letters or package measurements.
  • Its strength and light weight make it perfect for usage at home or in a warehouse.
Show More
Value for Money
2
Trimming Shop Shipping Mail PiP Template Postal Large, Small Letter & Small Parcel Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, Red
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Trimming Shop Shipping Mail PiP Template Postal Large, Small Letter & Small Parcel Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, Red

Trimming Shop
Why we love it
  • Multiple sizes for varied needs.
  • Durable design for daily use.
  • Perfect for business shipping accuracy.
Main Highlights
  • ๐Œ๐”๐‹๐“๐ˆ๐๐‹๐„ ๐’๐ˆ๐™๐„๐’: Pack contains 2 guides, small-large letter guide & parcel guide. Total size of small & large letter template is 280mm x 70mm (L x W). 250mm x 25mm (L x W) for Large Letters & 165mm x 5mm (L x W) for Small Letters. Total size of parcel template is 380mm x 190mm (L x W). 350mm x 160mm (L x W) for Small Letters, & Thickness of 5mm
  • ๐ƒ๐”๐‘๐€๐๐‹๐„ & ๐‹๐ˆ๐†๐‡๐“๐–๐„๐ˆ๐†๐‡๐“: The template is made from premium quality plastic material and is very durable as well as lightweight, making it easy to carry and use daily
  • ๐๐ˆ๐ ๐†๐”๐ˆ๐ƒ๐„: This size guide is a template for measuring size and charges of a letter based on the pricing in proportion method employed by shipping mail
  • ๐„๐€๐’๐˜ ๐“๐Ž ๐”๐’๐„: This postal size guide is straightforward to use. Simply pass your letter through the spaces without forcing them through
  • ๐๐„๐‘๐…๐„๐‚๐“ ๐…๐Ž๐‘ ๐๐”๐’๐ˆ๐๐„๐’๐’๐„๐’: This shipping mail size guide is an ideal tool for businesses as it enables them to calculate the exact amount they will have to pay for dispatching their products
Show More
9.6
Superb
Product image 1
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Product image 4
9.6
Superb
Trimming Shop

Trimming Shop Shipping Mail PiP Template Postal Large, Small Letter & Small Parcel Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, Red

Why we love it
  • Multiple sizes for varied needs.
  • Durable design for daily use.
  • Perfect for business shipping accuracy.
Main Highlights
  • ๐Œ๐”๐‹๐“๐ˆ๐๐‹๐„ ๐’๐ˆ๐™๐„๐’: Pack contains 2 guides, small-large letter guide & parcel guide. Total size of small & large letter template is 280mm x 70mm (L x W). 250mm x 25mm (L x W) for Large Letters & 165mm x 5mm (L x W) for Small Letters. Total size of parcel template is 380mm x 190mm (L x W). 350mm x 160mm (L x W) for Small Letters, & Thickness of 5mm
  • ๐ƒ๐”๐‘๐€๐๐‹๐„ & ๐‹๐ˆ๐†๐‡๐“๐–๐„๐ˆ๐†๐‡๐“: The template is made from premium quality plastic material and is very durable as well as lightweight, making it easy to carry and use daily
  • ๐๐ˆ๐ ๐†๐”๐ˆ๐ƒ๐„: This size guide is a template for measuring size and charges of a letter based on the pricing in proportion method employed by shipping mail
  • ๐„๐€๐’๐˜ ๐“๐Ž ๐”๐’๐„: This postal size guide is straightforward to use. Simply pass your letter through the spaces without forcing them through
  • ๐๐„๐‘๐…๐„๐‚๐“ ๐…๐Ž๐‘ ๐๐”๐’๐ˆ๐๐„๐’๐’๐„๐’: This shipping mail size guide is an ideal tool for businesses as it enables them to calculate the exact amount they will have to pay for dispatching their products
Show More
3
R Mail Letter Parcel Size Guide - White/Red Acrylic
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R Mail Letter Parcel Size Guide - White/Red Acrylic

Generic
Why we love it
  • High-quality acrylic material.
  • Royal Mail approved packaging.
  • Support for small businesses.
Main Highlights
  • acrylic
  • size guide
  • anti fine
  • packaging assistance
  • 2 sizes- see other listing
  • R mail approved
  • lower packaging costs
  • small business
  • uk supplier
  • 3mm thick
Show More
9.4
Superb
Product image 1
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9.4
Superb
Generic

R Mail Letter Parcel Size Guide - White/Red Acrylic

Why we love it
  • High-quality acrylic material.
  • Royal Mail approved packaging.
  • Support for small businesses.
Main Highlights
  • acrylic
  • size guide
  • anti fine
  • packaging assistance
  • 2 sizes- see other listing
  • R mail approved
  • lower packaging costs
  • small business
  • uk supplier
  • 3mm thick
Show More
4
Trimming Shop Shipping Mail PiP Template Postal Large, Small Letter & Small Parcel Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, White
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Trimming Shop Shipping Mail PiP Template Postal Large, Small Letter & Small Parcel Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, White

Trimming Shop
Why we love it
  • Multiple sizes for versatility.
  • Durable yet lightweight design.
  • Perfect for business shipping needs.
Main Highlights
  • ๐Œ๐”๐‹๐“๐ˆ๐๐‹๐„ ๐’๐ˆ๐™๐„๐’: Pack contains 2 guides, small-large letter guide & parcel guide. Total size of small & large letter template is 280mm x 70mm (L x W). 250mm x 25mm (L x W) for Large Letters & 165mm x 5mm (L x W) for Small Letters. Total size of parcel template is 380mm x 190mm (L x W). 350mm x 160mm (L x W) for Small Letters, & Thickness of 5mm
  • ๐ƒ๐”๐‘๐€๐๐‹๐„ & ๐‹๐ˆ๐†๐‡๐“๐–๐„๐ˆ๐†๐‡๐“: The template is made from premium quality plastic material and is very durable as well as lightweight, making it easy to carry and use daily
  • ๐๐ˆ๐ ๐†๐”๐ˆ๐ƒ๐„: This size guide is a template for measuring size and charges of a letter based on the pricing in proportion method employed by shipping mail
  • ๐„๐€๐’๐˜ ๐“๐Ž ๐”๐’๐„: This postal size guide is straightforward to use. Simply pass your letter through the spaces without forcing them through
  • ๐๐„๐‘๐…๐„๐‚๐“ ๐…๐Ž๐‘ ๐๐”๐’๐ˆ๐๐„๐’๐’๐„๐’: This shipping mail size guide is an ideal tool for businesses as it enables them to calculate the exact amount they will have to pay for dispatching their products
Show More
9.4
Superb
Product image 1
Product image 2
Product image 3
Product image 4
9.4
Superb
Trimming Shop

Trimming Shop Shipping Mail PiP Template Postal Large, Small Letter & Small Parcel Size Pricing in Proportion Charge Guide with Ruler for Post Office Postage, White

Why we love it
  • Multiple sizes for versatility.
  • Durable yet lightweight design.
  • Perfect for business shipping needs.
Main Highlights
  • ๐Œ๐”๐‹๐“๐ˆ๐๐‹๐„ ๐’๐ˆ๐™๐„๐’: Pack contains 2 guides, small-large letter guide & parcel guide. Total size of small & large letter template is 280mm x 70mm (L x W). 250mm x 25mm (L x W) for Large Letters & 165mm x 5mm (L x W) for Small Letters. Total size of parcel template is 380mm x 190mm (L x W). 350mm x 160mm (L x W) for Small Letters, & Thickness of 5mm
  • ๐ƒ๐”๐‘๐€๐๐‹๐„ & ๐‹๐ˆ๐†๐‡๐“๐–๐„๐ˆ๐†๐‡๐“: The template is made from premium quality plastic material and is very durable as well as lightweight, making it easy to carry and use daily
  • ๐๐ˆ๐ ๐†๐”๐ˆ๐ƒ๐„: This size guide is a template for measuring size and charges of a letter based on the pricing in proportion method employed by shipping mail
  • ๐„๐€๐’๐˜ ๐“๐Ž ๐”๐’๐„: This postal size guide is straightforward to use. Simply pass your letter through the spaces without forcing them through
  • ๐๐„๐‘๐…๐„๐‚๐“ ๐…๐Ž๐‘ ๐๐”๐’๐ˆ๐๐„๐’๐’๐„๐’: This shipping mail size guide is an ideal tool for businesses as it enables them to calculate the exact amount they will have to pay for dispatching their products
Show More
5
Trimming Shop 3pcs UK Shipping Mail PIP Template, Wooden Postal Size Guide for Large Letter, Small Letter and Parcel Categories, Royal Mail Pricing in Proportion Ruler, Durable 3-Size Gauge Tool
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Trimming Shop 3pcs UK Shipping Mail PIP Template, Wooden Postal Size Guide for Large Letter, Small Letter and Parcel Categories, Royal Mail Pricing in Proportion Ruler, Durable 3-Size Gauge Tool

Trimming Shop
6% Off
Why we love it
  • Convenient for multiple letter sizes.
  • Durable design for everyday use.
  • Ideal for business shipping needs.
Main Highlights
  • ๐’๐ฆ๐š๐ซ๐ญ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐๐ˆ๐ ๐’๐ข๐ณ๐ž ๐“๐ž๐ฆ๐ฉ๐ฅ๐š๐ญ๐ž ๐›๐ฒ ๐“๐ซ๐ข๐ฆ๐ฆ๐ข๐ง๐  ๐’๐ก๐จ๐ฉ: Ensure every dispatch meets Royal Mail regulations with the 3pcs Shipping Mail PIP Template. This professional wooden postal size guide is designed for sellers, retailers, and home posting, providing quick and reliable checks to prevent costly surcharges and optimise mailing efficiency.
  • ๐ƒ๐ฎ๐ซ๐š๐›๐ฅ๐ž ๐–๐จ๐จ๐๐ž๐ง ๐๐ฎ๐ข๐ฅ๐: Crafted from lightweight, water-resistant MDF in a natural wooden colour, this postal template balances durability with portability. Sturdy enough for daily use in busy mailrooms, e-commerce packing stations, and office environments, it remains slim and easy to store.
  • ๐๐ซ๐ž๐œ๐ข๐ฌ๐ข๐จ๐ง ๐Œ๐ž๐š๐ฌ๐ฎ๐ซ๐ข๐ง๐  ๐“๐จ๐จ๐ฅ๐ฌ: Each postal size template is fitted with precision apertures, a 5 mm depth gauge, an accurate millimetre scale, and clear ruler graduations. It allows instant verification of letter and parcel sizes, ensuring compliance with Royal Mailโ€™s Pricing in Proportion (PIP) system.
  • ๐๐ซ๐š๐œ๐ญ๐ข๐œ๐š๐ฅ ๐„๐ฏ๐ž๐ซ๐ฒ๐๐š๐ฒ ๐”๐ฌ๐ž: Ideal for online sellers, market stall vendors, retailers, and office teams, this postal size guide speeds up package preparation and guarantees accurate postage charges. It helps eliminate errors, saving both time and money at the post office.
  • ๐๐š๐œ๐ค ๐ƒ๐ž๐ญ๐š๐ข๐ฅ๐ฌ & ๐ƒ๐ข๐ฆ๐ž๐ง๐ฌ๐ข๐จ๐ง๐ฌ: This set includes 3 Royal Mail Size Templates covering three categories. Large Letter slot: 250mm ร— 25mm. Small Letter slot: 165mm ร— 5mm. Small Parcel slot: 350mm ร— 160mm with a thickness allowance of 160 mm. A must-have shipping tool for professional postage checks.
Show More
9.3
Superb
Product image 1
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9.3
Superb
Trimming Shop

Trimming Shop 3pcs UK Shipping Mail PIP Template, Wooden Postal Size Guide for Large Letter, Small Letter and Parcel Categories, Royal Mail Pricing in Proportion Ruler, Durable 3-Size Gauge Tool

6% Off
Why we love it
  • Convenient for multiple letter sizes.
  • Durable design for everyday use.
  • Ideal for business shipping needs.
Main Highlights
  • ๐’๐ฆ๐š๐ซ๐ญ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐๐ˆ๐ ๐’๐ข๐ณ๐ž ๐“๐ž๐ฆ๐ฉ๐ฅ๐š๐ญ๐ž ๐›๐ฒ ๐“๐ซ๐ข๐ฆ๐ฆ๐ข๐ง๐  ๐’๐ก๐จ๐ฉ: Ensure every dispatch meets Royal Mail regulations with the 3pcs Shipping Mail PIP Template. This professional wooden postal size guide is designed for sellers, retailers, and home posting, providing quick and reliable checks to prevent costly surcharges and optimise mailing efficiency.
  • ๐ƒ๐ฎ๐ซ๐š๐›๐ฅ๐ž ๐–๐จ๐จ๐๐ž๐ง ๐๐ฎ๐ข๐ฅ๐: Crafted from lightweight, water-resistant MDF in a natural wooden colour, this postal template balances durability with portability. Sturdy enough for daily use in busy mailrooms, e-commerce packing stations, and office environments, it remains slim and easy to store.
  • ๐๐ซ๐ž๐œ๐ข๐ฌ๐ข๐จ๐ง ๐Œ๐ž๐š๐ฌ๐ฎ๐ซ๐ข๐ง๐  ๐“๐จ๐จ๐ฅ๐ฌ: Each postal size template is fitted with precision apertures, a 5 mm depth gauge, an accurate millimetre scale, and clear ruler graduations. It allows instant verification of letter and parcel sizes, ensuring compliance with Royal Mailโ€™s Pricing in Proportion (PIP) system.
  • ๐๐ซ๐š๐œ๐ญ๐ข๐œ๐š๐ฅ ๐„๐ฏ๐ž๐ซ๐ฒ๐๐š๐ฒ ๐”๐ฌ๐ž: Ideal for online sellers, market stall vendors, retailers, and office teams, this postal size guide speeds up package preparation and guarantees accurate postage charges. It helps eliminate errors, saving both time and money at the post office.
  • ๐๐š๐œ๐ค ๐ƒ๐ž๐ญ๐š๐ข๐ฅ๐ฌ & ๐ƒ๐ข๐ฆ๐ž๐ง๐ฌ๐ข๐จ๐ง๐ฌ: This set includes 3 Royal Mail Size Templates covering three categories. Large Letter slot: 250mm ร— 25mm. Small Letter slot: 165mm ร— 5mm. Small Parcel slot: 350mm ร— 160mm with a thickness allowance of 160 mm. A must-have shipping tool for professional postage checks.
Show More
6
WedDecor UK Wooden Postal Parcel Template, Shipping Mail PIP Ruler with 3pcs Set for Large Letter, Small Letter and Parcel Checks, Royal Mail Pricing in Proportion Size Guide and Mail Gauge Tool
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WedDecor UK Wooden Postal Parcel Template, Shipping Mail PIP Ruler with 3pcs Set for Large Letter, Small Letter and Parcel Checks, Royal Mail Pricing in Proportion Size Guide and Mail Gauge Tool

WedDecor
Why we love it
  • Three size options available.
  • Lightweight and durable materials.
  • Perfect for businesses calculating costs.
Main Highlights
  • ๐’๐ฆ๐š๐ซ๐ญ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐๐ˆ๐ ๐’๐ข๐ณ๐ข๐ง๐  ๐†๐ฎ๐ข๐๐ž ๐›๐ฒ ๐–๐ž๐๐ƒ๐ž๐œ๐จ๐ซ: Simplify every dispatch with the Shipping Mail PIP Template. Designed for Royal Mail compliance, this 3-piece postal size guide is perfect for sellers, offices, and home posting. It provides quick and accurate checks for letters and parcels, helping to avoid surcharges and ensuring smooth, professional mailing operations.
  • ๐ƒ๐ฎ๐ซ๐š๐›๐ฅ๐ž ๐–๐จ๐จ๐๐ž๐ง ๐๐ฎ๐ข๐ฅ๐: Crafted from lightweight, water-resistant MDF with a natural wooden finish, this robust template is built to last. Ideal for daily use in e-commerce packing stations, mailrooms, retail counters, and offices, it combines plywood-style resilience with easy portability and compact storage.
  • ๐๐ซ๐ž๐œ๐ข๐ฌ๐ข๐จ๐ง ๐Œ๐ž๐š๐ฌ๐ฎ๐ซ๐ข๐ง๐  ๐“๐จ๐จ๐ฅ๐ฌ: Each template is fitted with precision apertures, a 5 mm depth gauge, a millimetre scale, and clear ruler markings. This all-in-one mail gauge tool makes it easy to measure letters and parcels accurately, supporting Royal Mailโ€™s Pricing in Proportion (PIP) system.
  • ๐„๐ฏ๐ž๐ซ๐ฒ๐๐š๐ฒ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐„๐Ÿ๐Ÿ๐ข๐œ๐ข๐ž๐ง๐œ๐ฒ: Perfect for online sellers, retailers, market stall vendors, and office teams, this 3pcs Royal Mail size guide speeds up package preparation and eliminates postage errors, saving both time and money.
  • ๐๐š๐œ๐ค ๐ƒ๐ž๐ญ๐š๐ข๐ฅ๐ฌ & ๐ƒ๐ข๐ฆ๐ž๐ง๐ฌ๐ข๐จ๐ง๐ฌ: The set includes 3 postal templates to cover all key categories: Large Letter slot 250 mm ร— 25 mm, Small Letter slot 165 mm ร— 5 mm, and Small Parcel slot 350 mm ร— 160 mm with 160 mm thickness allowance. A reliable postage calculator and essential Royal Mail size guide for accurate, stress-free mailing.
Show More
9.1
Superb
Product image 1
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Product image 4
9.1
Superb
WedDecor

WedDecor UK Wooden Postal Parcel Template, Shipping Mail PIP Ruler with 3pcs Set for Large Letter, Small Letter and Parcel Checks, Royal Mail Pricing in Proportion Size Guide and Mail Gauge Tool

Why we love it
  • Three size options available.
  • Lightweight and durable materials.
  • Perfect for businesses calculating costs.
Main Highlights
  • ๐’๐ฆ๐š๐ซ๐ญ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐๐ˆ๐ ๐’๐ข๐ณ๐ข๐ง๐  ๐†๐ฎ๐ข๐๐ž ๐›๐ฒ ๐–๐ž๐๐ƒ๐ž๐œ๐จ๐ซ: Simplify every dispatch with the Shipping Mail PIP Template. Designed for Royal Mail compliance, this 3-piece postal size guide is perfect for sellers, offices, and home posting. It provides quick and accurate checks for letters and parcels, helping to avoid surcharges and ensuring smooth, professional mailing operations.
  • ๐ƒ๐ฎ๐ซ๐š๐›๐ฅ๐ž ๐–๐จ๐จ๐๐ž๐ง ๐๐ฎ๐ข๐ฅ๐: Crafted from lightweight, water-resistant MDF with a natural wooden finish, this robust template is built to last. Ideal for daily use in e-commerce packing stations, mailrooms, retail counters, and offices, it combines plywood-style resilience with easy portability and compact storage.
  • ๐๐ซ๐ž๐œ๐ข๐ฌ๐ข๐จ๐ง ๐Œ๐ž๐š๐ฌ๐ฎ๐ซ๐ข๐ง๐  ๐“๐จ๐จ๐ฅ๐ฌ: Each template is fitted with precision apertures, a 5 mm depth gauge, a millimetre scale, and clear ruler markings. This all-in-one mail gauge tool makes it easy to measure letters and parcels accurately, supporting Royal Mailโ€™s Pricing in Proportion (PIP) system.
  • ๐„๐ฏ๐ž๐ซ๐ฒ๐๐š๐ฒ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐„๐Ÿ๐Ÿ๐ข๐œ๐ข๐ž๐ง๐œ๐ฒ: Perfect for online sellers, retailers, market stall vendors, and office teams, this 3pcs Royal Mail size guide speeds up package preparation and eliminates postage errors, saving both time and money.
  • ๐๐š๐œ๐ค ๐ƒ๐ž๐ญ๐š๐ข๐ฅ๐ฌ & ๐ƒ๐ข๐ฆ๐ž๐ง๐ฌ๐ข๐จ๐ง๐ฌ: The set includes 3 postal templates to cover all key categories: Large Letter slot 250 mm ร— 25 mm, Small Letter slot 165 mm ร— 5 mm, and Small Parcel slot 350 mm ร— 160 mm with 160 mm thickness allowance. A reliable postage calculator and essential Royal Mail size guide for accurate, stress-free mailing.
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7
Royal Mail Postage Size Guide, Easy & Accurate Measurements for 2025
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Royal Mail Postage Size Guide, Easy & Accurate Measurements for 2025

Raven Laser Cut
Why we love it
  • Accurate sizing eliminates extra fees.
  • Easy to use for everyone.
  • Durable design for lasting use.
Main Highlights
  • ACCURATE SIZING: Ensure precise package measurements with this guide for Mail charges. This template can be used to check three sizes of mail for shipping by UK Mail service. (Small Letters, Large Letters and Small Parcels.)
  • EASY TO USE: No ruler needed. With this postal size guide you simply pass your items through the relevant space without forcing them through to check thickness and width and then check the maximum length against the marked size on the gauge.
  • UP-TO-DATE: Complies with current UK Post Office size rules for 2025. It quickly and accurately measures your packageโ€™s dimensions, so you don't worry about paying extra fees by being slightly over size.
  • DURABLE CONSTRUCTION: Sturdy guide for long-lasting use. Made from quality, varnished 6mm thick plywood and is very durable as well as lightweight, making it easy to carry, store and use daily. Ideal for use in a warehouse or for use at home.
  • ECO FRIENDLY: This is environmentally friendly and made from FSC certified wood. Plastic variants are not great for the environment! Choosing manufacturers that use FSC-certified materials means you're going above and beyond to protect the planet without giving up quality. FSC-certified Wood means it comes from sources where the forest is always regenerated as trees are replanted so there is no net loss of forest.
  • UK MADE: Manufactured by us in the UK and sealed against moisture with a non-toxic acrylic varnish. The postage size guide is wooden in colour but due to the difference in wood shades the item's colour may be slightly different from shown in the pictures.
  • IDEAL FOR BUSINESSES: This shipping size guide is an ideal tool for calculation of the exact amount to pay for dispatching the products, by measuring the package dimension accurately for correct postage cost; this ensures the recipient is not getting insufficient postage charges resulting in a poor buying experience.
  • PERFECT FOR HOME OR BUSINESSES: It is a really essential tool for any business or online seller.
  • PLEASE NOTE: If ordered before 3pm, we will dispatch the same business day with tracked 24hr service.
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9.1
Superb
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9.1
Superb
Raven Laser Cut

Royal Mail Postage Size Guide, Easy & Accurate Measurements for 2025

Why we love it
  • Accurate sizing eliminates extra fees.
  • Easy to use for everyone.
  • Durable design for lasting use.
Main Highlights
  • ACCURATE SIZING: Ensure precise package measurements with this guide for Mail charges. This template can be used to check three sizes of mail for shipping by UK Mail service. (Small Letters, Large Letters and Small Parcels.)
  • EASY TO USE: No ruler needed. With this postal size guide you simply pass your items through the relevant space without forcing them through to check thickness and width and then check the maximum length against the marked size on the gauge.
  • UP-TO-DATE: Complies with current UK Post Office size rules for 2025. It quickly and accurately measures your packageโ€™s dimensions, so you don't worry about paying extra fees by being slightly over size.
  • DURABLE CONSTRUCTION: Sturdy guide for long-lasting use. Made from quality, varnished 6mm thick plywood and is very durable as well as lightweight, making it easy to carry, store and use daily. Ideal for use in a warehouse or for use at home.
  • ECO FRIENDLY: This is environmentally friendly and made from FSC certified wood. Plastic variants are not great for the environment! Choosing manufacturers that use FSC-certified materials means you're going above and beyond to protect the planet without giving up quality. FSC-certified Wood means it comes from sources where the forest is always regenerated as trees are replanted so there is no net loss of forest.
  • UK MADE: Manufactured by us in the UK and sealed against moisture with a non-toxic acrylic varnish. The postage size guide is wooden in colour but due to the difference in wood shades the item's colour may be slightly different from shown in the pictures.
  • IDEAL FOR BUSINESSES: This shipping size guide is an ideal tool for calculation of the exact amount to pay for dispatching the products, by measuring the package dimension accurately for correct postage cost; this ensures the recipient is not getting insufficient postage charges resulting in a poor buying experience.
  • PERFECT FOR HOME OR BUSINESSES: It is a really essential tool for any business or online seller.
  • PLEASE NOTE: If ordered before 3pm, we will dispatch the same business day with tracked 24hr service.
Show More
8
Royal Mail Postage Size Guide Ruler PPI Letter Size Guide Ruler, Post Office Letter Size Guide Template for Royal Mail Letter Postal Template Size Guide Postage Ruler ppi for Post Office Postal Price
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Royal Mail Postage Size Guide Ruler PPI Letter Size Guide Ruler, Post Office Letter Size Guide Template for Royal Mail Letter Postal Template Size Guide Postage Ruler ppi for Post Office Postal Price

ATEK
Why we love it
  • Accurate measurements for precise mailing.
  • User-friendly layout for easy use.
  • Portable design for convenient storage.
Main Highlights
  • Accurate Royal Mail Sizing โ€“ Postage size guide PPI for Royal Mail Post office letter size guide template Designed to measure PIP letter and large letter sizes for correct postage
  • Durable & Lightweight - Royal mail letter postal template size guide postage ruler ppi โ€“ Made from sturdy material for long-lasting use at home or office
  • Easy to Use โ€“ Letter size guide ruler post office postal price postage is Clearly marked cut-outs and ruler ensure quick and accurate postage checks royal mail letter size guide
  • Compact & Portable โ€“ Royal mail size guide template, Fits easily into desk drawers, bags, or postal workstations for letter size guide royal mail
  • Ideal for Home & Business โ€“ Royal Mail PPI Ruler Template for Royal Mail Post office letter size guide template - Perfect for small businesses, eBay sellers, and everyday Royal Mail postage
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8.9
Excellent
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8.9
Excellent
ATEK

Royal Mail Postage Size Guide Ruler PPI Letter Size Guide Ruler, Post Office Letter Size Guide Template for Royal Mail Letter Postal Template Size Guide Postage Ruler ppi for Post Office Postal Price

Why we love it
  • Accurate measurements for precise mailing.
  • User-friendly layout for easy use.
  • Portable design for convenient storage.
Main Highlights
  • Accurate Royal Mail Sizing โ€“ Postage size guide PPI for Royal Mail Post office letter size guide template Designed to measure PIP letter and large letter sizes for correct postage
  • Durable & Lightweight - Royal mail letter postal template size guide postage ruler ppi โ€“ Made from sturdy material for long-lasting use at home or office
  • Easy to Use โ€“ Letter size guide ruler post office postal price postage is Clearly marked cut-outs and ruler ensure quick and accurate postage checks royal mail letter size guide
  • Compact & Portable โ€“ Royal mail size guide template, Fits easily into desk drawers, bags, or postal workstations for letter size guide royal mail
  • Ideal for Home & Business โ€“ Royal Mail PPI Ruler Template for Royal Mail Post office letter size guide template - Perfect for small businesses, eBay sellers, and everyday Royal Mail postage
Show More
9
SHAFAH - Mail PPI Letter Size Guide Ruler Post Office Postal Price Postage in Red
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SHAFAH - Mail PPI Letter Size Guide Ruler Post Office Postal Price Postage in Red

SHAFAH
Why we love it
  • Works out mailing costs.
  • Durable and lightweight.
  • Easy to use.
Main Highlights
  • Mails Pricing in Proportion (PiP) is the new way to send letters, large letters, and packets
  • This handy guide allows you to work out your mail costs by giving you the correct sizes for each of the 3 letter types
  • Mail Size guide is available in Red colour, Royal Mail Size Guide is used for Large and Small Letters.
  • Push your package (gently, they must not be forced through) through the slot, if it fits in the small 165x5mm one, it is a letter, if it slots into the 250x25mm one then it is a large letter. If it fits neither of these, then it is a packet
  • It's durable and lightweight making this ideal for in a warehouse or for use at home
Show More
8.8
Excellent
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8.8
Excellent
SHAFAH

SHAFAH - Mail PPI Letter Size Guide Ruler Post Office Postal Price Postage in Red

Why we love it
  • Works out mailing costs.
  • Durable and lightweight.
  • Easy to use.
Main Highlights
  • Mails Pricing in Proportion (PiP) is the new way to send letters, large letters, and packets
  • This handy guide allows you to work out your mail costs by giving you the correct sizes for each of the 3 letter types
  • Mail Size guide is available in Red colour, Royal Mail Size Guide is used for Large and Small Letters.
  • Push your package (gently, they must not be forced through) through the slot, if it fits in the small 165x5mm one, it is a letter, if it slots into the 250x25mm one then it is a large letter. If it fits neither of these, then it is a packet
  • It's durable and lightweight making this ideal for in a warehouse or for use at home
Show More
10
Trimming Shop UK Shipping Mail PIP Template, Wooden Postal Size Guide for Large & Small Letters, Pricing in Proportion Ruler, Royal Mail Parcel Measurement Template โ€“ Pack of 2
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Trimming Shop UK Shipping Mail PIP Template, Wooden Postal Size Guide for Large & Small Letters, Pricing in Proportion Ruler, Royal Mail Parcel Measurement Template โ€“ Pack of 2

Trimming Shop
Why we love it
  • Streamlines your shipping routine.
  • Durable and lightweight design.
  • Perfect for accurate postage estimation.
Main Highlights
  • ๐’๐ฆ๐š๐ซ๐ญ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐๐ˆ๐ ๐’๐ข๐ณ๐ž ๐“๐ž๐ฆ๐ฉ๐ฅ๐š๐ญ๐ž ๐›๐ฒ ๐“๐ซ๐ข๐ฆ๐ฆ๐ข๐ง๐  ๐’๐ก๐จ๐ฉ: This royal postal template is a slim postage ruler crafted for sellers, shops, and home posting. This envelope sizing tool makes it quick to check whether items meet postal dimensions and avoid unexpected surcharges, streamlining your shipping routine.
  • ๐๐ฎ๐ข๐ฅ๐ญ ๐ญ๐จ ๐‹๐š๐ฌ๐ญ: Made from water-resistant, lightweight MDF, the postage gauge is both durable and easy to carry. The robust construction withstands daily use in busy mailrooms and e-commerce dispatch desks while remaining compact for handy storage.
  • ๐Š๐ž๐ฒ ๐…๐ž๐š๐ญ๐ฎ๐ซ๐ž๐ฌ: The template includes two rectangular cutouts labelled Large Letter and Letter, a millimetre scale, and clear ruler markings for fast length checks. A hanging hole keeps the tool within reach. Use it as a postage calculator and size guide to estimate charges with confidence.
  • ๐–๐ก๐ž๐ซ๐ž ๐ญ๐จ ๐”๐ฌ๐ž: Perfect for Royal Mail checks, post office trips, online sellers, retailers, and office teams, this postage ruler speeds packing and reduces costly postage mistakes. Simply pass your letter through the spaces without forcing them through. It is ideal for small parcels, envelopes, community shops, and market stall sellers.
  • ๐–๐ก๐š๐ญ ๐ญ๐ก๐ž ๐๐š๐œ๐ค ๐ˆ๐ง๐œ๐ฅ๐ฎ๐๐ž๐ฌ: The pack includes one / two pieces of a postal-size template with a total size of 305mm by 85mm overall. The large letters slot is 250mm x 25mm (l x w) for small letter slot is 165mm x 5mm (l x w). This postal template is simple and a must-have shipping tool for accurate postage estimation.
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8.7
Excellent
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8.7
Excellent
Trimming Shop

Trimming Shop UK Shipping Mail PIP Template, Wooden Postal Size Guide for Large & Small Letters, Pricing in Proportion Ruler, Royal Mail Parcel Measurement Template โ€“ Pack of 2

Why we love it
  • Streamlines your shipping routine.
  • Durable and lightweight design.
  • Perfect for accurate postage estimation.
Main Highlights
  • ๐’๐ฆ๐š๐ซ๐ญ ๐๐จ๐ฌ๐ญ๐š๐ฅ ๐๐ˆ๐ ๐’๐ข๐ณ๐ž ๐“๐ž๐ฆ๐ฉ๐ฅ๐š๐ญ๐ž ๐›๐ฒ ๐“๐ซ๐ข๐ฆ๐ฆ๐ข๐ง๐  ๐’๐ก๐จ๐ฉ: This royal postal template is a slim postage ruler crafted for sellers, shops, and home posting. This envelope sizing tool makes it quick to check whether items meet postal dimensions and avoid unexpected surcharges, streamlining your shipping routine.
  • ๐๐ฎ๐ข๐ฅ๐ญ ๐ญ๐จ ๐‹๐š๐ฌ๐ญ: Made from water-resistant, lightweight MDF, the postage gauge is both durable and easy to carry. The robust construction withstands daily use in busy mailrooms and e-commerce dispatch desks while remaining compact for handy storage.
  • ๐Š๐ž๐ฒ ๐…๐ž๐š๐ญ๐ฎ๐ซ๐ž๐ฌ: The template includes two rectangular cutouts labelled Large Letter and Letter, a millimetre scale, and clear ruler markings for fast length checks. A hanging hole keeps the tool within reach. Use it as a postage calculator and size guide to estimate charges with confidence.
  • ๐–๐ก๐ž๐ซ๐ž ๐ญ๐จ ๐”๐ฌ๐ž: Perfect for Royal Mail checks, post office trips, online sellers, retailers, and office teams, this postage ruler speeds packing and reduces costly postage mistakes. Simply pass your letter through the spaces without forcing them through. It is ideal for small parcels, envelopes, community shops, and market stall sellers.
  • ๐–๐ก๐š๐ญ ๐ญ๐ก๐ž ๐๐š๐œ๐ค ๐ˆ๐ง๐œ๐ฅ๐ฎ๐๐ž๐ฌ: The pack includes one / two pieces of a postal-size template with a total size of 305mm by 85mm overall. The large letters slot is 250mm x 25mm (l x w) for small letter slot is 165mm x 5mm (l x w). This postal template is simple and a must-have shipping tool for accurate postage estimation.
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We scanned 248 products

We reviewed these offers relevant to the Royal Mail Large Letter Size Guide within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Glamified , glam, Trimming Shop, Generic, WedDecor, Raven Laser Cut, ATEK, SHAFAH, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Royal Mail Large Letter Size Guide in the market, we considered we took a deep dive into 1241 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each reviewโ€™s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: