How Heavy Can First Class Mail Be and Still Use a Stamp?

If you’re wondering how heavy a letter is for a first class stamp, you’ve come to the right place.

The USPS gives the mailer some leeway when it comes to the weight of first class letters.

3.5 ounces is the maximum weight for first class letters.

3.5 ounces is the maximum weight for first class letters.

First class letters weigh only 3.5 ounces maximum per piece.

If you need to send a document or document weighing more than 3.5 ounces, he recommends splitting the mail into multiple envelopes with individual stamps.

Learn more about the difference between postage and delivery here.

The number of First Class (aka “Forever”) stamps required to mail a letter depends on the weight of the letter.

As a rule of thumb, one first class stamp represents the postage to send one ounce of mail.

So if your letter weighs two ounces, you need two Forever stamps.

If your letter reaches the maximum weight of 3.5 ounces, USPS may require a total of 4 forever stamps.

Forever stamps are currently 58 cents each.

These stamps are used to send letters by first class mail, but please note that the USPS frequently increases the price of stamps.

But once you buy it, you can literally use it forever.

That means you can buy a Forever stamp today for 58 cents and in 10 or 15 years you can use it to send a letter by first class mail.

Rolls of Forever stamps can be picked up at a variety of locations including select drugstores around town, the nearest post office, and of course his USPS website.

Scroll to Top