Amazon FBA report desk · two private local files
Compare Amazon’s measurements with your bench measurements.
Join Fee Preview rows to a simple measured-SKU file, normalize common units and flag Amazon dimensions or package weight above your tolerance.
Private by design: both files stay local. The tool does not request remeasurement, dispute a fee or transmit catalogue data.
How to compare Amazon's measurements with yours
- Download the FBA Fee Preview report and prepare a simple CSV of your own measured SKUs.
- Choose both files here and set the tolerance you want to review against.
- Press Compare measurements locally and read the list of SKUs where Amazon is above your measurement.
What the result tells you
Both files are converted to centimetres and kilograms and the sides are sorted from longest to shortest before they are compared. A flag only means a SKU is worth measuring again; packaging method, timing and product variation all matter. The tool does not choose a size tier, calculate a universal fee or request a fee adjustment.
Your seller data stays local
The tool runs in your browser, inside an isolated frame on this page that has no network access. Your two files is read by your own device, so it is not uploaded to TNAADO or anyone else, and nothing is stored. The advertising on this page sits outside the frame and cannot see what you choose. Sales and fee data are commercially sensitive and are not uploaded, stored or transmitted.
- Limits: 15 MB, 50,000 data rows, 200 columns and 50,000 characters per field.
Formula and example
Dimensions are sorted longest to shortest after conversion to centimetres. Gap % = (Amazon measurement − your measurement) / your measurement × 100. Weight uses the same formula after conversion to kilograms. An Amazon longest side of 31.5 cm versus a measured 30 cm side is 5% above measured.
Limitations and official source
A tolerance flag is only a review candidate. Packaging method, unit conventions, measurement timing and product variation matter. The tool does not calculate a universal fee, infer the correct size tier or guarantee a fee adjustment.
Official source, checked 15 October 2026: Amazon’s FBA Fee Preview Report documentation lists longest, median and shortest side, unit of dimension, item package weight, weight unit, size tier and estimated fee fields, with store-specific variations.