01
Use the packaged dimensions
Multiply the longest, median, and shortest packaged sides in inches, then divide by 139.
CalculatorsFREE · NO SIGNUP
Amazon Dimensional Weight Calculator
Apply Amazon's US dimensional-weight divisor to a fully packaged item and compare it with scale weight before checking the fee preview.
FREE TO USEA LOOK ATLAS TOOL
01 USE IT NOW02 NO ACCOUNT03 FIELD NOTES BELOW
WORKING INPUTS
Measure the fully packaged item.
LIVE RESULT
Chargeable weight estimate
15 lbWeight-comparison estimate only; confirm eligibility, size tier, and fees in Amazon Fee Preview.RAW DIMENSIONAL WEIGHT14.50 lb
ROUNDED DIMENSIONAL15 lb
ROUNDED SCALE WEIGHT10 lb
DIVISOR139 in³ / lb
54
ONE CLEAR OPERATING SIGNAL
Use the packaged dimensions
Measure the fully packaged item's longest, median, and shortest sides in inches.
WORKING VIEW
15 LB18 × 14 × 8 IN · 10 LB
METHODgreater of rounded scale weight or L × W × H ÷ 139
WORKING NOTEChargeable-weight estimate · 14.50 lb raw dimensional · rounded upward
INPUTS → CLEAR OUTPUT
THE FIELD NOTES
Quick answer above. Better decisions below.
Use the result now, then read the practical notes for assumptions, examples, limitations, and the choices behind it.
18 × 14 × 8 IN · 10 LB15 LB
Chargeable-weight estimate · 14.50 lb raw dimensional · rounded upward
02
Compare rounded weights
The planning result rounds dimensional and scale weights upward to whole pounds and selects the greater value.
03
Check whether dimensional weight applies
Size tier, apparel status, and current program rules determine whether Amazon uses dimensional weight.
04
Confirm in Fee Preview
Amazon measurements, policies, and fee tiers can change.
THE PRODUCT IS NEXT
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Use the packaged dimensions
Multiply the longest, median, and shortest packaged sides in inches, then divide by 139.
Use the physical package, not bare product dimensions.
Compare rounded weights
The planning result rounds dimensional and scale weights upward to whole pounds and selects the greater value.
Fee-tier rounding can depend on current Amazon rules and product classification.
Check whether dimensional weight applies
Size tier, apparel status, and current program rules determine whether Amazon uses dimensional weight.
This page exposes the comparison without claiming universal eligibility.
Confirm in Fee Preview
Amazon measurements, policies, and fee tiers can change.
Use Revenue Calculator or Fee Preview for the final product-specific estimate.
Questions, answered.
What divisor does Amazon use for dimensional weight?
The current US guidance uses package length multiplied by width and height, divided by 139.
Does Amazon use actual or dimensional weight?
When dimensional weight applies, Amazon uses the greater eligible weight for fee calculations.
Does this calculate the final FBA fee?
No. It estimates the weight comparison only; size tier and current fee tables remain separate.
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