You shipped a 400-gram product and the invoice says you owe for 1.2 kg. Welcome to a weight discrepancy. Couriers charge on chargeable weight — the higher of the actual (dead) weight and the volumetric weight — and when their measurement disagrees with yours, they raise a discrepancy and bill the difference. Left unchecked, these charges are a steady, silent tax on your shipping.
Actual weight vs volumetric weight
Actual weight is what a physical scale reads. Volumetric (dimensional) weight accounts for how much space a parcel occupies — a big, light box takes up truck volume that could have carried heavier parcels, so couriers price for it. The chargeable weight is whichever of the two is higher.
The standard Indian domestic formula is: volumetric weight (kg) = (length x breadth x height in cm) / 5000. So a 30 x 25 x 16 cm box computes to 12000 / 5000 = 2.4 kg volumetric. If the actual weight is only 1.1 kg, you are billed on 2.4 kg. Some couriers and express services use a 4000 divisor instead of 5000, which raises the volumetric number — always confirm the divisor in your contract.
Why discrepancies get raised
- The courier's hub re-measured the parcel and got a larger dimension than you declared.
- Your declared weight or dimensions were rounded down or estimated rather than measured.
- Packaging expanded the box — void fill, bulky cartons, or loose wrapping inflated volumetric weight.
- The wrong divisor was applied versus your contracted terms.
- Genuine measurement error at the hub — which is exactly what you can dispute with evidence.
How to win the dispute
Winning weight disputes is an evidence game. The seller who can produce a dated, dimension-and-weight photo of the packed parcel wins far more often than the one arguing from memory. Build the evidence at pack time, before the parcel leaves your dock.
- 1Weigh and measure every parcel at packing on a calibrated scale, and record actual weight plus L x B x H.
- 2Capture a photograph showing the parcel on the scale and against a measuring tape or ruler, timestamped.
- 3Calculate your own chargeable weight using the contracted divisor so you know the correct number before the invoice arrives.
- 4When a discrepancy is raised, file the dispute within the courier's window with your evidence attached — do not let it lapse.
- 5Track dispute outcomes by courier to spot partners who systematically over-measure.
Reduce discrepancies at the source
Disputes recover money after the fact; better packing prevents the charge in the first place. Right-size your cartons to the product, minimise void fill, and standardise box sizes so your declared dimensions match what the hub measures. Fewer oversized boxes means fewer volumetric surprises.
“Once we started photographing every parcel on the scale, our win rate on weight disputes jumped. The couriers were not being malicious — we just could never prove our numbers before.”— Illustrative composite of a packaged-goods seller
Frequently asked
The common domestic formula is (length x breadth x height in cm) divided by 5000, giving weight in kilograms. For example, a 40 x 30 x 20 cm box is 24000 / 5000 = 4.8 kg volumetric. Some express services use a 4000 divisor, which produces a higher figure. Couriers bill on the chargeable weight — the higher of volumetric and actual weight.
Yes, and you should. Couriers allow disputes within a defined window, usually a few days after the charge is raised. The key is evidence: a timestamped photo of the packed parcel on a calibrated scale next to a measuring tape, plus your own chargeable-weight calculation using the contracted divisor. Miss the window and the charge usually sticks.
RouteOneX detects weight discrepancies as soon as a courier raises them, checks the billed weight against your declared dimensions and contracted divisor, and assembles the supporting evidence so you can dispute in one click within the allowed window — plus it tracks which couriers over-measure most often.