Weight and size overview

There are two main categories of letter mail weights and sizes to help determine how much it will cost to send your item. Minimum dimensions for all items are 140 mm x 90 mm (5.5 inches x 3.5 inches).

Standard (50 g or less)

Use a single stamp for items that are within the standard weight and size range.

Maximum dimensions
The maximum dimensions are 245 mm x 156 mm (9.6 inches x 6.1 inches). However, the maximum dimensions for cards and postcards to the U.S.A. or an International destination are 235 mm x 120 mm (9.2 inches x 4.7 inches).

Find your postage rate

Use your mail weight, size and destination to see how much it will cost to send your item.

See postage rates

Tips for sending special occasion mailings

These tips can help you smoothly send a large amount of mail, such as wedding invitations and other special occasion mail.