Did you know that Amazon India silently charges tens of thousands of sellers extra freight fees every single week due to automated Weight Discrepancies?
When your parcel arrives at an Amazon Sort Center or FBA Fulfillment Center, it passes through automated laser scanning conveyor belts called Cubiscan machines. If a loose flap of packing tape sticks out, or another parcel leans against your box, the Cubiscan records an inflated dimension.
A 350g t-shirt suddenly gets recorded as a 1.4 kg volumetric package.
Amazon automatically re-rates your shipping fee from the 500g slab (₹54) to the 1.5 kg slab (₹104), silently extracting an extra ₹50 + 18% GST from your payout.
If you ship 1,000 orders a month, weight discrepancies can leak ₹50,000 to ₹1,00,000 of pure profit every year.
How Amazon Measures Billable Weight
Amazon charges freight based on the higher of two values:
- 1Actual Dead Weight: Measured on a physical digital scale in grams.
- 2Volumetric (Dimensional) Weight: Calculated as:
$$ ext{Volumetric Weight (kg)} = rac{ ext{Length (cm)} imes ext{Width (cm)} imes ext{Height (cm)}}{5000}$$
If your physical dead weight is 400g, but your box dimensions are $25 imes 20 imes 12 ext{ cm}$:
$$ ext{Volumetric Weight} = rac{25 imes 20 imes 12}{5000} = rac{6000}{5000} = \mathbf{1.20 ext{ kg}}$$
Amazon bills you for 1.5 kg (rounded up to the next 500g slab), even though your product weighs under half a kilogram!
The 6-Sided Photo Evidence Package Required to Win Disputes
To win a weight discrepancy appeal in Seller Central, opening a generic support ticket will fail 100% of the time. Amazon’s Weight Handling team requires a strict photographic evidence package:
- 1Digital Weighing Scale Photo: Place the packed product on a zeroed digital weighing scale showing the exact dead weight in grams, with the shipping barcode label clearly visible.
- 2Length Measurement Photo: Place a rigid metal ruler or measuring tape along the longest side of the box showing exact centimeters.
- 3Width Measurement Photo: Place the ruler along the width.
- 4Height Measurement Photo: Place the ruler along the vertical height.
- 5Clear ASIN & Barcode Close-Up: Clear photograph showing the FNSKU / SKU barcode label.
Compile your dispute documentation and case submission draft with our Weight Discrepancy Dispute Builder and optimize box sizes with our 1-cm Box Trim Solver.