Here's what you need to know:
* US Postal Service:
* First-Class Mail: Up to 1 ounce (28 grams) is the standard weight for a letter.
* Letters heavier than 1 ounce: They are charged by the ounce or fraction of an ounce.
* Other countries: Weight limits for letters vary by country. You'll need to check the postal service website of the country you're sending the letter to.
To determine the weight of your letter:
* Use a kitchen scale or a postal scale.
* Weigh the letter with its envelope.
Knowing the weight of your letter helps you determine the postage needed and avoid overpaying.
