Review-dated assumptions
Method, sources, and limitations
Dimensional weight is package volume divided by a rule-specific divisor. The compared chargeable weight is the greater of actual and dimensional weight after only the selected rounding rules.
Calculation order
- Apply the selected dimension treatment to each packed outer dimension.
- Multiply the three measured dimensions and divide by the preset or custom divisor.
- Apply the selected compared-weight rounding to actual and dimensional weight.
- Choose the greater value and multiply it by the number of identical packages.
Reviewed presets
- DHL Express standard — metric: divisor 5000; DHL Express standard volumetric divisor; confirm the booked product, origin and contract. Official source.
- FedEx U.S./Puerto Rico/international — 139: divisor 139; FedEx public U.S. guidance; dimensions are rounded to the nearest whole inch. Confirm service and account rules. Official source.
- UPS U.S. Daily Rates — 139: divisor 139; UPS U.S. Daily Rates guidance; dimensions and fractional dimensional weight are rounded up. Confirm the applicable rate type. Official source.
- UPS U.S. Retail Rates — 166: divisor 166; UPS U.S. Retail Rates guidance; dimensions and fractional dimensional weight are rounded up. Confirm the applicable rate type. Official source.
Presets last reviewed 2026-08-28; next scheduled review 2027-02-28.
Why results can differ from an invoice
Carrier rules vary by country, service, rate type, packaging, account contract, route, and measurement system. Automated scans may record larger dimensions. Minimum weights, large-package rules, surcharges, and final billing increments are outside this calculator. A preset is a transparent starting point, not a quote or contractual interpretation.
Privacy
Dimensions, weight, quantity, selected rule, and results remain in browser memory. No shipment data is uploaded.