Courier comparison
Enter one parcel and see how every carrier bills it: different divisors, different rounding, different size limits, different chargeable weights, side by side.
Canada Post is 5.5 kg cheaper than LBC Express — a 41% difference on the same parcel.
| Carrier | Divisor | Chargeable | Billed on | Cost at your rate |
|---|---|---|---|---|
| Canada Post | 6000 | 8 kg | volume | $95.00 |
| J&T Express | 6000 | 8 kg | volume | $95.00 |
| DHL Express | 5000 | 9.5 kg | volume | $112.81 |
| FedEx | 5000 | 9.5 kg | volume | $112.81 |
| UPS | 5000 | 9.5 kg | volume | $112.81 |
| Royal Mail | 5000 | 9.5 kg | volume | $112.81 |
| Evri | 5000 | 9.5 kg | volume | $112.81 |
| DPD | 5000 | 9.5 kg | volume | $112.81 |
| Delhivery | 5000 | 9.5 kg | volume | $112.81 |
| Blue Dart | 5000 | 9.5 kg | volume | $112.81 |
| DTDC | 5000 | 9.5 kg | volume | $112.81 |
| Xpressbees | 5000 | 9.5 kg | volume | $112.81 |
| Ekart | 5000 | 9.5 kg | volume | $112.81 |
| India Post | 5000 | 9.5 kg | volume | $112.81 |
| Aramex | 5000 | 9.5 kg | volume | $112.81 |
| USPS | 5000 | 9.53 kg | volume | $113.11 |
| Australia Post | 4000 | 12 kg | volume | $142.50 |
| LBC Express | 3500 | 13.5 kg | volume | $160.31 |
No carrier will ever publish this table. Every official rate tool answers "what does our service cost", and none answers "which of you is cheapest for this box".
No carrier will ever build this page. Every official rate tool answers "what does our service cost", and none answers "which of you is cheapest for this box" — which is the question every shipper actually has.
Questions people ask about this
Why do carriers give different weights for the same box?
Because they use different divisors and different rounding. A 40 by 30 by 20 cm box at 2 kg bills at 5 kg on a 5000 divisor with half-kilo rounding, and 4 kg on a 6000 divisor. On a large consignment that difference compounds into real money.
Which courier is cheapest?
It depends on the parcel, not the carrier. Dense and small favours whoever has the best base rate. Bulky and light favours whoever has the largest divisor. Cross-border favours whoever clears customs without a separate brokerage charge. That is why the answer has to be calculated per shipment.
Related calculators
Where these numbers come from
Rates and rules change, and a calculator running on stale data is worse than no calculator. Every figure below carries the date we last checked it and a confidence level, so you can judge how much weight to put on it.
| Source | Publisher | Effective | Confidence |
|---|---|---|---|
| Dimensional weight divisors by carrier FedEx and UPS daily rates use 139 for inches and pounds, 5000 for centimetres and kilograms. UPS retail counter rates use 166. DHL Express uses 5000. Compiled from carrier documentation and multiple independent operators; FedEx blocked our automated read on 2026-08-17. | ShipMargin (compiled) | — | Corroborated |
| DMM 113.1.3 — dimensional weight, and Notice 123 price list Read directly off the Domestic Mail Manual, revision 7-12-26. It states the divisor as 139, applies dimensional weight only to parcels exceeding one cubic foot (1,728 cubic inches), requires each measurement to be rounded up to the nearest whole inch before multiplying, and requires the result to be rounded up to the next whole number. Nonrectangular parcels multiply the cubic dimensions by 0.785 first. Notice 123, effective the same date, confirms the threshold and the 108-to-130 inch oversize band. | USPS Postal Explorer | 2026-07-12 | Primary source |
Page last reviewed . Spotted something out of date? Tell us — corrections are published with the date they were made.