FedEx Dimensional
Weight Calculator.
Calculate FedEx billable weight with FedEx’s published divisor: 139 in³/lb (US, Puerto Rico and international, in inches) or 5,000 cm³/kg in metric. Open the FedEx calculator to get your DIM weight and chargeable weight in seconds.
More FedEx and multi-carrier scenarios.
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 →139 in inches. 5,000 in centimetres.
FedEx applies dimensional weight to all shipments in customer packaging. The divisor is 139 for US, Puerto Rico and international shipments (source):
DIM weight (lb) = (L × W × H in inches) ÷ 139
DIM weight (kg) = (L × W × H in cm) ÷ 5,000
Your chargeable weight is the greater of the actual weight and the DIM weight, rounded up to the next whole pound (or kilogram).
If your FedEx contract specifies a different divisor, enter it under Advanced options in the calculator (in³/lb or cm³/kg). See our guide to negotiating DIM divisors.
| Residential — U.S. package services | $6.95 |
| Residential — FedEx Ground / Home Delivery | $6.45 |
| Delivery area — residential / extended | $6.60 / $8.80 |
| Delivery area — commercial / extended | $4.45 / $5.55 |
| Delivery area — remote | $16.75 |
| Additional Handling — dimension | $29.50–$40.75 |
| Additional Handling — weight | $46.00–$58.75 |
| Additional Handling — packaging | $26.50–$33.75 |
Per package, US package services; Additional Handling and Oversize vary by zone. Source: FedEx 2026 surcharge and fee changes.
Rules verified 22 Sep 2026 · sources: FedEx 2026 surcharge and fee changes
| Additional Handling — dimension, any of: | |
| Longest side | > 48 in |
| Second-longest side | > 30 in |
| Length + girth | > 105 in |
| Cubic volume | > 10,368 in³ |
| Minimum billable weight | 40 lb |
| Additional Handling — weight | |
| Actual weight (US / intl) | > 50 lb / > 55 lb |
| Oversize — any of: | |
| Longest side · length + girth | > 96 in · > 130 in |
| Cubic volume · actual weight | > 17,280 in³ · > 110 lb |
| Charge (US, by zone) | $255–$330 |
| Minimum billable weight (US) | 90 lb |
| Unauthorized — over any of: | |
| Length · length + girth · weight | 108 in · 165 in · 150 lb |
Source: FedEx Service Guide 2026, pp. 127–129. FedEx Ground’s Unauthorized Package Charge is $1,875 per package. Packaging criteria (e.g. not in corrugated boxes, cylindrical, banded) also trigger Additional Handling.
Rules verified 22 Sep 2026 · sources: FedEx Service Guide 2026
A typical FedEx calculation.
Scenario: Shipping a box of pillows. Actual weight 8 lb. Package dimensions 24 × 20 × 14 in. Shipping FedEx Ground within the US.
DIM weight = 6,720 ÷ 139 = 48.3 lb → rounds up to 49 lb
Chargeable weight = max(8 lb, 49 lb) = 49 lb
The package weighs 8 lb but is billed at 49 lb. If the same box measured 24.2 × 20 × 14 in, rounding up makes it 25 × 20 × 14 = 7,000 in³ → 51 lb. Pack tight, and measure the packed box.
How FedEx compares.
| Carrier | Divisor (inches) | When DIM applies |
|---|---|---|
| FedEx | 139 in³/lb | All packages |
| UPS Daily Rates | 139 in³/lb | All packages |
| UPS Retail Rates | 166 in³/lb | All packages |
| USPS Priority / Ground Advantage | 139 in³/lb | Over 1 ft³ (1,728 in³) |
Lower divisor = higher DIM weight. USPS ignores dimensional weight for parcels of 1 ft³ or less, and Flat Rate and Cubic prices don’t use it at all (USPS DMM 223 §1.4). UPS divisors: UPS. See the full UPS vs FedEx comparison.
Rules verified 22 Sep 2026 · sources: FedEx Service Guide 2026 · UPS 2026 Rate and Service Guide (Daily Rates) · UPS 2026 Rate and Service Guide (Retail Rates) · USPS DMM 223 (Priority Mail: DIM weight, cubic, nonstandard fees)