USPS ounce threshold checker
Under one pound, USPS Ground Advantage charges by ounce tier. A heavy box can push a light item up a tier; a mailer adds a fraction of an ounce. Check where your package lands.
Your package
Questions
How much does a poly mailer weigh?
A 10 × 13 in mailer at 2.5 mil weighs about 0.4 oz. Use the tool for your size and thickness.
Can you make thinner or thicker mailers?
Yes. Our mailers run 1.5 to 4 mil as standard, and other thicknesses on request.
Test it with real samples
We reply within one business day with sizes, mil and a delivered price.
- Free sample kit shipped to your US address
- Delivered prices, DAP to your door
- Orders from one pallet, mixed sizes welcome
- Plain, printed with your brand, or fully neutral
- Meet in person in January–February 2027
Prefer email? sales@kargopekusa.com