Calculate FedEx billable weight using the 2026 divisors: 139 in³/lb for US domestic and 5000 cm³/kg for international. Get your DIM weight and chargeable weight in seconds.
If you're modeling shipping costs across many SKUs or comparing FedEx contract rates against list rates, our sister site dimweightcalc.com has tools tailored for that — including bulk-input mode and historical divisor reference.
Visit dimweightcalc.com →FedEx applies dimensional weight to both FedEx Express and FedEx Ground shipments. The divisor depends on origin and destination:
Your chargeable weight is the greater of: actual scale weight, or DIM weight. FedEx rounds up to the next whole pound (or half-kilogram for international).
High-volume shippers can negotiate the divisor up to 166 or 194, which significantly reduces costs for light-but-bulky packages. See our guide on negotiating DIM divisors.
| Additional handling | ~$25 |
| Oversize (105"+ L+G) | ~$130 |
| Over 50 lb actual | + handling |
| Over 96" longest side | + handling |
| Residential delivery | ~$5.20 |
Rates approximate, 2026. Check current rates in your FedEx account.
Scenario: Shipping a box of pillows. Actual weight 8 lb. Package dimensions 24 × 20 × 14 in. Shipping FedEx Ground within the US.
The package physically weighs 8 lb but FedEx bills it at 49 lb because of dimensional weight. The DIM rule increases the shipping cost by roughly 6x. Lesson: pack tight, especially for light goods.
| Carrier | US domestic divisor | International divisor |
|---|---|---|
| FedEx | 139 in³/lb | 5000 cm³/kg |
| UPS | 139 in³/lb | 5000 cm³/kg |
| USPS Priority Mail | 166 in³/lb | 166 in³/lb |
| DHL Express | 139 in³/lb | 5000 cm³/kg |
Lower divisor = higher DIM weight = more expensive for bulky packages. USPS is the most forgiving for light-but-bulky items, though it has package size limits FedEx and UPS don't. See the full UPS vs FedEx comparison.