Welcome to Envelope Sizes

What is this website for?

This website is designed to help you make the right decision on what size and style of envelope you need for your letters or documents.

Do these pictures mean anything to you?

No? well, you have come to the right place.

For a list of envelope sizes, click here.

For a guide on envelope windows, click here.

For help with envelope types, click here.

For help with envelope seals, click here.