Information Guide

What Is a Parcel?

What classifies as a parcel and how it differs from letters and large letters.

3 min readUpdated April 2025

What Is a Parcel

A parcel is any item that exceeds the Royal Mail large letter dimensions (353mm x 250mm x 25mm thick, 750g). Anything thicker than 25mm but within the small parcel limits (61cm x 46cm x 46cm, up to 2kg) is classified as a small parcel. Larger or heavier items become medium or large parcels with higher postage rates.

A parcel is any item that exceeds the Royal Mail large letter dimensions (353mm x 250mm x 25mm thick, 750g).
Anything thicker than 25mm but within the small parcel limits (61cm x 46cm x 46cm, up to 2kg) is classified as a small parcel.

Quick answer

A parcel is any item that exceeds the Royal Mail large letter dimensions (353mm x 250mm x 25mm thick, 750g). Anything thicker than 25mm but within the small parcel limits (61cm x 46cm x 46cm, up to 2kg) is classified as a small parcel. Larger or heavier items become medium or large parcels with higher postage rates

Key details

Larger or heavier items become medium or large parcels with higher postage rates

Practical information

Anything thicker than 25mm but within the small parcel limits (61cm x 46cm x 46cm, up to 2kg) is classified as a small parcel Larger or heavier items become medium or large parcels with higher postage rates

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Frequently asked questions

A parcel is any item that exceeds the Royal Mail large letter dimensions (353mm x 250mm x 25mm thick, 750g). Anything thicker than 25mm but within the small parcel limits (61cm x 46cm x 46cm, up to 2kg) is classified as a small parcel

Check the relevant carrier, retailer, or platform website for the most current details and guidance.

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