freightcalcsTNT volumetric weight calculator
5,000 cm³/kg international · 4,000 cm³/kg TNT domestic Australia. Part of freightcalcs.com.
5,000 cm³/kg international · 4,000 cm³/kg TNT domestic Australia. Part of freightcalcs.com.
TNT is the one carrier on this site where the divisor depends on which TNT service you booked, and picking the wrong one produces a materially wrong number. International express shipments use 5,000 cm³/kg, the same convention as DHL Express. TNT domestic services in Australia have historically used 4,000 cm³/kg — a harsher divisor that produces 25% more volumetric weight for an identical carton.
Since the FedEx acquisition, many TNT markets now book and rate through FedEx systems. If your account has been migrated, your shipment is priced on the FedEx rules — divisor 139 in³/lb / 5,000 cm³/kg — and you should use the FedEx calculator instead. Check which system issued your waybill before relying on a TNT-specific figure.
Default below is international express (5,000 cm³/kg / 139 in³/lb). For TNT domestic Australia, divide by 4,000 cm³/kg (111 in³/lb) instead — see the comparison table.
A 60 × 40 × 40 cm carton weighing 15 kg actual — 96,000 cm³:
| Service | Divisor | Volumetric | Chargeable |
|---|---|---|---|
| TNT international express | 5,000 | 19.2 kg | 19.2 kg |
| TNT domestic (Australia) | 4,000 | 24.0 kg | 24.0 kg |
Nearly five kilograms of difference on one box, from the divisor alone. Confirm the divisor on your rate card before quoting a customer — it is the single biggest variable in a TNT price.
| If you are shipping… | Use |
|---|---|
| Cross-border, TNT-branded waybill | 5,000 cm³/kg |
| Within Australia on a TNT domestic service | 4,000 cm³/kg |
| On an account migrated to FedEx | FedEx rules — 139 in³/lb / 5,000 cm³/kg |
TNT bills the greater of actual and volumetric weight, assessed per piece and then summed across the consignment.
Both are correct for different services. TNT international express uses 5,000 cm³/kg; TNT domestic services in Australia have used 4,000 cm³/kg. A 4,000 divisor produces 25% more volumetric weight for the same carton, so the distinction matters.
TNT was acquired by FedEx, and in many markets TNT shipments are booked and rated through FedEx systems. Where your account has migrated, FedEx rules apply — divisor 139 in³/lb or 5,000 cm³/kg. TNT-branded services still operate in some markets on TNT rate cards.
Yes. Each item in a consignment is compared against its own volumetric weight, and the chargeable weights are then added. A dense carton does not offset a light one.
Approximately 111 in³/lb. The 5,000 cm³/kg international divisor is approximately 139 in³/lb.
Check the service name and the rating system on your waybill or invoice, then confirm against your current TNT or FedEx rate card. Divisors are contractual and can differ by negotiated account.
FedEx · UPS · USPS · DHL Express · Amazon (FBA & Buy Shipping) · Canada Post · Australia Post · Purolator · Parcelforce
Compare all carrier divisors · Chargeable weight · CBM calculator · Weight or measure