Free seller tool
Find the weight your courier will really bill, what the empty space in your boxes costs each month, and how much to trim to drop a slab.
How it's worked out
Divisors come from Shiprocket's courier documentation. Rate cards differ between couriers and contracts, so check yours before you change your packaging.
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Measure the outside of the box, not the product. Couriers round each side up to the next whole centimetre, so a 24.2 cm side counts as 25 cm.
Multiply length, width and height in centimetres, then divide by your courier's divisor. Most Indian couriers use 5000. FedEx Surface uses 4500 and Aramex 6000.
Volumetric weight (kg) = L × W × H (cm) ÷ 5000
The courier compares the volumetric weight with what the parcel actually weighs and bills whichever is higher, then rounds it up to its billing step, usually 0.5 kg.
Billed weight = round up( max(actual, volumetric), 0.5 kg )
When you're billed on box size, shrinking the longest side saves the most. The calculator works out how small that side needs to get to bill on actual weight, or at least one slab lower.
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FAQ
What sellers ask about the volumetric weight tool.
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