Work out the volumetric weight DHL Express will charge for your parcel. Enter the size and weight below and the calculator applies DHL's official 5000 divisor, then shows you whether you'll be billed on actual or volumetric weight.
No ruler to hand? An A4 sheet of paper is 297 × 210 mm, so you can use one as a rough guide.
DHL Express prices most parcels on the space they take up, not just how heavy they are. It works out the volumetric weight of your box, compares it against the actual weight on the scales, and bills you for whichever is larger. This stops a big, light box, a duvet for example, from travelling at the price of a small heavy one. If your parcel is dense, DHL charges the actual weight. If it is bulky and light, DHL charges the volumetric weight.
This is why a DHL quote can come back well above what your kitchen scales told you. The box is being priced on its size. The only real lever to bring a DHL charge down is a smaller box, because the divisor is fixed.
DHL uses a divisor of 5000 for shipments measured in centimetres. You multiply the three dimensions in centimetres to get the volume, then divide by 5000 to get the volumetric weight in kilograms:
(Length cm × Width cm × Height cm) ÷ 5000 = Volumetric weight in kg
Say you are sending a 50 × 40 × 30 cm box with DHL that actually weighs 4 kg. The volume is 50 × 40 × 30 = 60,000 cm³. Divide that by 5000 and you get a volumetric weight of 12 kg. DHL charges you for 12 kg, not 4 kg, because the box is bulky for its weight. If the same box weighed 15 kg, you would be charged for 15 kg instead, because actual weight is now the larger of the two.
DHL's 5000 divisor matches FedEx, UPS and TNT for international centimetre measurements, so the figure above also holds if you compare quotes. Evri/Hermes uses a 4000 divisor, which gives a higher volumetric weight for the same box. If you want to compare carriers side by side, our multi-carrier dimensional weight calculator lets you tick several at once.
Source: the 5000 divisor and volumetric weight method are published in the official guidance from DHL. Verified June 2026.
DHL rounds part-kilograms up to the next half or whole kilogram on some services, and may add minimum charges or special handling fees that this calculator cannot see. Treat the result here as the floor of what you will be charged, not the exact penny, and check your DHL rate card before sending high-value items. Once you have your DHL label, our free DHL label resizer trims it to 4x6 so it prints cleanly on a thermal printer.
Your package's dimensional weight exceeds its actual weight. Couriers charge for whichever is larger to prevent customers from sending light items in huge boxes, which wastes vehicle space.
No. Royal Mail uses fixed format categories (Letter, Large Letter, Small Parcel, Medium Parcel) instead of dimensional weight. They don't charge based on how much space your item takes up.
Most major international couriers (DHL, FedEx, UPS, TNT) use 5000. Evri/Hermes uses 4000. Always check your courier's website or shipping software for the exact rate card.
Yes, they are the same calculation under two names. "Volumetric weight" is the term DHL and most UK and European couriers use; "dimensional weight" is the more common US term. The formula and the result are identical.
DHL multiplies length × width × height in centimetres and divides by 5000 to get the volumetric weight in kilograms. It then charges you for whichever is greater, the volumetric weight or the actual weight. A 50 × 40 × 30 cm box works out at 60,000 ÷ 5000 = 12 kg.
For international shipments measured in centimetres, FedEx and UPS both use 5000, the same as DHL. Their US domestic services use a different formula that divides cubic inches by 139, but that does not apply to parcels sent from the UK.
Multiply the three sides in centimetres to get the volume in cubic centimetres, then divide by your courier's divisor, usually 5000. For example, 30 × 25 × 20 = 15,000 cm³, and 15,000 ÷ 5000 = 3 kg volumetric weight.
Generally no, dimensional weight is a standard industry practice used by all major couriers for large, light items. It's disclosed in their terms. The best strategy is to pack more efficiently.
This calculator uses the standard dimensional weight formula. However, couriers may apply rounding rules, minimum charges, or special handling fees that won't show here. Always verify with your courier's rate card before shipping high-value items.