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Royal Mail Parcel Sizes
Royal Mail Parcel Sizes
When shipping multiple items, miscalculation of parcel sizing can end up costing you a lot of money. It’s really important to ensure you have the right PIP (pricing in proportion) box for the parcel you’re sending. The Royal Mail use a series of weight and size restrictions to calculate postage costs.
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We want to make it easier for businesses to select the correct parcel size. Once you know the size you require, browse our Postal Plus Range to find the perfect fit for your product.
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Parcel Size Grid
For more information about how to present your mail and the most up-to-date information on packaging sizes, please visit the Royal Mail website.
Out of the box postal solutions
A Postal Tube is ideal for sending maps, posters or artwork in the post.
If you can roll it, you can post it in a Postal Tube! Our 23 x 3″ Postal Tubes are manufactured from strong brown Kraft paper outer, and are supplied with polythene end caps. Please remember to allow 15mm at either end for the end caps. The caps fit snugly, but tape can be applied to add extra security.
For posting, the length of the item plus twice the diameter must be less than 104cm, with the greatest dimension less than 90cm.
Jetbox® is a packaging tube alternative that is sold per roll, and is cut to size.Â
Jetbox® manufactured from is made using 100% recyclable board and is designed to reduce waste. Designed to be cut to size, this postal tube alternative ensures you never over pay for postage with too big of a box!Â
Remember, when posting, the length of the item plus twice the diameter must be less than 104cm, with the greatest dimension less than 90cm.
Frequently Asked Questions
What is the Royal Mail small parcel size?
The Royal Mail small parcel size is up to 45cm long, 35cm wide and 16cm deep, with a maximum weight of 2kg for the relevant Royal Mail services.
What are the Royal Mail parcel sizes?
The main Royal Mail formats are letter, large letter, small parcel and medium parcel. The maximum dimensions are 24cm x 16.5cm x 0.5cm for a letter, 35.3cm x 25cm x 2.5cm for a large letter, 45cm x 35cm x 16cm for a small parcel and 61cm x 46cm x 46cm for a medium parcel.
What is the maximum size for a Royal Mail medium parcel?
A Royal Mail medium parcel can measure up to 61cm long, 46cm wide and 46cm deep. The maximum weight can be up to 20kg, depending on the Royal Mail service selected.
What is the difference between a large letter and a small parcel?
A large letter is up to 35.3cm x 25cm x 2.5cm, while a small parcel is up to 45cm x 35cm x 16cm. The maximum weight also differs depending on the service.
Can I send a postal tube with Royal Mail?
Yes. Royal Mail has services for tubes and rolls. For relevant services, the greatest dimension can be up to 90cm and the length plus twice the diameter must be less than 104cm. Always check the requirements of the specific Royal Mail service before sending.
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Author: Alice Jeavons
Springpack is a UK packaging company delivering sustainable solutions that empower customers. We prioritise exceptional service, building strong relationships and developing innovative packaging solutions tailored to unique needs. Sustainability drives us, from eco-friendly materials to reusable practices minimising waste and emissions. As a family-run business, we’ve grown from humble beginnings to industry forerunners. Our passion lies in making a positive impact in our community and the lives of customers, employees, and stakeholders through outstanding service that exceeds expectations.