How much do mailed letters weigh?

Maximum weight for First-Class Mail letters is 3.5 oz; for large First-Class Mail envelopes and parcels, the maximum weight is 13 oz. All postcards and envelopes (or flats) must be rectangular, otherwise an additional charge may apply.

How heavy can a letter be for one stamp?

one ounce
Forever Stamps are ideal for mailing normal-sized, one-ounce letters within the United States. If you suspect that your letter may weigh more than one ounce, be sure to weigh it prior to affixing a Forever Stamp, as heavier letters will be returned due to lack of postage.

How much postage do I need for a 2 oz letter?

New Stamp Rates Effective August 29, 2021

Item New Price
Forever Stamp $0.58
Letter (2 ounce) $0.78
Letter (3 ounce) $0.98
Postcard $0.40

How do I know if my letter needs extra postage?

Customers must affix additional postage when mailing letters weighing in excess of 1 ounce and/or letters subject to the nonmachinable surcharge or mailpieces subject to another rate of postage (e.g., large envelopes or packages).

What happens if you don’t put enough postage on a letter?

If you send a first-class letter or package without enough postage, the post office will try to deliver the mail with a “Postage Due” notice. If the recipient refuses to pay, it will come back to you with a notice of insufficient postage.

Can I put two stamps on letter?

Can I just put two stamps on a large letter? As long as you don’t underpay you can combine stamps. Even old 1st class stamps as long as they don’t have a value printed on them can be used, they will be treated as paying this year’s 1st class price.

How do you calculate postage by weight?

Weigh Your Item and Round Up USPS rounds up to either the next pound (lb) or ounce (oz). For example, if your package weighs 3 lbs 5 oz, it would be charged at the 4 lb-rate. If you have an item for shipping by First-Class Package® service that weighs 7.3 oz, it must be charged at the 8 oz-rate.