How many stamps to mail envelope

The number of stamps needed to mail an envelope depends on the weight and size of the envelope, as well as the destination. Here are some general guidelines:

Domestic Mail (within the United States)

• For a standard letter-sized envelope (up to 1 oz), 1 first-class stamp is sufficient.
• For a standard letter-sized envelope (over 1 oz), 2 first-class stamps are required.
• For a larger envelope (e.g., a flat rate envelope), 2-3 first-class stamps may be needed.

International Mail

• For a standard letter-sized envelope (up to 1 oz) to Canada, 1 first-class international stamp is sufficient.
• For a standard letter-sized envelope (up to 1 oz) to other countries, 2-3 first-class international stamps may be needed.
• For larger envelopes or packages, additional postage may be required.

Other Considerations

• If you're sending a package or a large envelope, you may need to use a priority mail or parcel post service, which requires additional postage.
• If you're sending a package to a military address, you may need to use a special military mail rate.
• If you're sending a package to a PO box, you may need to use a special PO box rate.

Check the USPS Website

For the most up-to-date and accurate information on postage rates, I recommend checking the official website of the United States Postal Service (USPS) at www.usps.com. You can use their online postage calculator to determine the exact postage needed for your envelope.

Remember to always check the postage due indicator on your envelope to ensure you have enough postage. If you're unsure, you can also consult with a postal worker at your local post office.