Universal Carton Tier Calculator
(Free Tool)
“Baraka Impact created this free carton calculator to help businesses and individuals reuse shipping cartons and reduce waste. Enter any box size to find its correct USPS cubic tier in seconds.”
Tier Reference Chart
| Tier | Max Cu In | Priority Mail | Ground Adv. |
|---|---|---|---|
| 0.1 | 172 | ✓ | ✓ |
| 0.2 | 345 | ✓ | ✓ |
| 0.3 | 518 | ✓ | ✓ |
| 0.4 | 691 | ✓ | ✓ |
| 0.5 | 864 | ✓ | ✓ |
| 0.6 | 1,036 | — | ✓ |
| 0.7 | 1,209 | — | ✓ |
| 0.8 | 1,382 | — | ✓ |
| 0.9 | 1,555 | — | ✓ |
| 1.0 | 1,728 | — | ✓ |
