Postage depends on weight, dimensions, and how the piece moves through USPS equipment. Letters use a first-ounce rate (about $0.78 in 2026 here) plus $0.29 per ...
How Many Stamps Do I Need? (2026 USPS Calculator + Guide)
This summary was compiled by our editorial team from publicly available information for quick reading. For full details, refer to original reporting where available.
