How Many Stamps Do I Need for a Large Envelope?
www.shippingschool.com › how-many-stamps-do-i-needMar 07, 2022 · You can also pick up Additional Postage stamps for 5 or 10 cents each, but in our experience, if you need to pay for an extra ounce, it makes the most sense to just spring for the Additional Ounce postage stamps. Pro Tip: If your large envelope weighs three ounces, you can technically use three Forever stamps to cover the full cost of postage, too! You’ll be paying a little more than you have to, but USPS will accept the letter, no questions asked.