Freight answer · reviewed August 2026
How do I calculate dimensional weight for FedEx, UPS, DHL, or USPS?
Use finished package dimensions, the divisor for the exact service, and actual packed weight to find the planning chargeable weight.
Multiply the outside length, width, and height of the finished parcel, divide by the carrier or contract divisor, and compare the result with actual packed weight. The larger eligible weight normally controls before the carrier's measurement and billing-rounding rules.
Calculate it
Dimensional Weight Calculator
Replace the example with your finished package, pallet, or cargo details.
Enter the package once
Updates liveUse the finished outside dimensions and scale weight. We compare FedEx, UPS Daily, UPS Retail, USPS and DHL automatically—no divisor knowledge required.
What happens next: each carrier row first applies that carrier's dimension rule, then calculates DIM weight, checks whether DIM applies, compares it with scale weight, and rounds the likely billable weight.
Add parcel count or a contract divisorOptional
Before using the result
Check these four items.
- Measure the sealed outside parcel, not the product or an empty carton.
- Select the unit system and divisor that match the carrier service and rate card.
- Compare dimensional weight with scale weight and apply the per-parcel rounding rule.
- Run a packaging test if dimensional weight controls the quote.