Shipping Size Converter
Convert package dimensions between inches, cm, mm, and feet.
Standard Box Sizes
| Box | Inches (L x W x H) | Centimeters |
|---|---|---|
| Small | 8 x 6 x 4 | 20 x 15 x 10 |
| Medium | 14 x 10 x 6 | 36 x 25 x 15 |
| Large | 18 x 14 x 12 | 46 x 36 x 30 |
| Extra Large | 24 x 18 x 18 | 61 x 46 x 46 |
| USPS Small Flat Rate | 8.69 x 5.44 x 1.75 | 22 x 14 x 4.4 |
| USPS Medium Flat Rate | 11 x 8.5 x 5.5 | 28 x 22 x 14 |
| USPS Large Flat Rate | 12 x 12 x 5.5 | 30 x 30 x 14 |