How do I know if I need 1 or 2 stamps?

One Stamp or Two? Decoding the Postage Puzzle

Sending a letter seems simple enough, but the age-old question of "one stamp or two?" can unexpectedly stump even seasoned mailers. The key, thankfully, lies in a simple act: weighing your letter.

The United States Postal Service (USPS) bases postage on weight. A standard Forever stamp covers the cost of mailing a letter weighing one ounce or less. This is the cornerstone of your postage calculation. If your letter weighs one ounce or less, a single Forever stamp will suffice.

But what if your letter is heavier? This is where the decision between one or two stamps comes into play. While you could meticulously weigh your letter using a postage scale (available at most post offices and many stationery stores), a quicker, albeit slightly less precise, method exists.

Using two Forever stamps is the easiest solution for heavier mail. While this approach might result in a minor overpayment, it saves the time and effort of precise weighing. This is especially useful for those who infrequently mail letters or find weighing scales inconvenient. The slight extra cost is often negligible compared to the convenience.

Another handy rule of thumb: two sheets of standard 8.5 x 11 inch printer paper, folded in half or thirds, generally weigh approximately one ounce. This gives you a reasonable visual estimate. If your letter's volume is significantly less than two sheets of paper, one stamp is likely sufficient. If it's noticeably thicker or contains heavier inserts (such as photos or thick cardstock), two stamps are the safer bet.

Ultimately, the choice between one and two stamps hinges on your tolerance for precision versus convenience. Weighing your mail guarantees accurate postage, avoiding potential delays or return-to-sender situations. However, for many, the simplicity of using two stamps outweighs the potential minor overpayment, providing a fast and efficient way to ensure your letter reaches its destination.