Banner as a title for the Size Guidelines and Postal Options page

Size Guidelines‌

When choosing an enclosing envelope or box, please ensure this is as small as possible as Royal Mail prices are based on both size and weight.- see guide to the right.

Postage pricing categories:‌

  • Letter: up to 100g – sent by Royal Mail (franked) Maximum size L:240mm W:165mm D:5mm
  • Large Letter: up to 750g – sent by Royal Mail (franked) Maximum size L:353mm W:250mm D:25mm
  • Small Parcel: up to 2kg – sent by Royal Mail (franked) Maximum size L:450mm W:350mm D:160mm
  • Medium Parcel: up to 20kg – sent by Parcelforce or DHL depending on size and weight
  • Larger or multiple items will be sent via DHL.

Beparcel sizes

For the latest information please see the Royal mail size guidelines (PDF, 520kB).