Enter your product dimensions and weight — estimate your FBA fulfillment fee and size tier
Estimates the standard-size fulfillment fee only. It excludes referral fees, storage, inbound shipping, and account-specific surcharges.
FBA fulfillment rates reviewed 2026-06-28. Estimate based on configured rates. Verify final fees with the platform.
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Use this FBA fee estimator before you source inventory, change packaging, or send products to Amazon. Enter the packaged length, width, height, and weight to estimate the FBA size tier and fulfillment fee based on configured rates. The tool is built for sellers checking whether a product is small standard, large standard, oversize, or near a tier boundary. It focuses on fulfillment fees, not full product profit, so use it alongside the Amazon FBA Calculator when you also need referral fees, product cost, inbound shipping, storage fees, and net margin.
A 10 x 7 x 2 inch packaged product weighing 0.8 lb is checked against standard-size tiers so you can estimate the fulfillment fee before shipping inventory to Amazon.
If your package is close to a size-tier boundary, adjust the dimensions to see whether smaller packaging could reduce the FBA fulfillment fee.
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Amazon FBA fees start with size and weight. A practical fulfillment fee estimate needs packaged dimensions, actual weight, size tier, dimensional weight, and a clear understanding of which Amazon seller fees are not included in this calculator.
Measure the length, width, and height of your product as it will be packaged for FBA — including any inserts, poly bag, or box. Amazon measures the longest side, median side, and shortest side. The dimensions of the packaged (not unboxed) product determine your size tier.
Weigh the complete package including packaging materials. Use actual weight. Amazon will also calculate dimensional weight (L×W×H÷139) and charge whichever is greater for large packages. For products under 1 lb that are large in size, dimensional weight often applies.
The calculator automatically assigns your size tier: Small Standard (longest side ≤15", weight ≤0.25 lb), Large Standard (longest side ≤18", weight ≤20 lb), Small Oversize (longest side ≤60"), Medium Oversize (longest side ≤108"), Large Oversize, or Special Oversize. Each tier has a different base fulfillment fee.
Use the calculated size tier and weight to estimate the FBA fulfillment fee. This is the pick, pack, and ship fee Amazon charges when FBA fulfills the order. It is different from referral fees, storage fees, inbound placement fees, and your product cost.
This calculator focuses on the FBA fulfillment fee. It does not replace Amazon's full Revenue Calculator because it does not calculate every marketplace cost. For a complete profit view, add referral fees, product cost, inbound shipping, storage fees, advertising, and returns in the Amazon FBA Calculator.
If you're near a size tier boundary, test whether smaller packaging could move the product to a lower-cost tier. For example, reducing box height by 0.5 inches can sometimes lower fulfillment fees. Small packaging changes can matter a lot when you sell hundreds of units per month.
The FBA fulfillment fee is the fee Amazon charges to pick, pack, and ship an order from its fulfillment network. It is mainly based on your product's packaged dimensions, shipping weight, and size tier. It is separate from referral fees, storage fees, inbound shipping, and advertising costs.
Measure the packaged product, weigh it, determine the FBA size tier, then apply the configured fulfillment fee for that tier and weight. This calculator handles the size-tier and fee estimate from your dimensions and weight, but you should verify final fees in Seller Central before making inventory decisions.
Amazon's FBA size tiers are: Small Standard (≤15"×12"×0.75", ≤16 oz), Large Standard (≤18"×14"×8", ≤20 lb), Small Oversize (≤60"×30", ≤70 lb), Medium Oversize (≤108", ≤150 lb), Large Oversize (≤108", ≤150 lb with girth), Special Oversize (anything larger). Base fees range from $3.06 for Small Standard to $200+ for Special Oversize.
Dimensional weight = (L × W × H) ÷ 139. Amazon charges the greater of actual weight or dimensional weight for Large Standard and all Oversize tiers. Small Standard products are only charged actual weight. For example: a box 12×10×8 inches weighing 1 lb has a dimensional weight of 6.9 lbs — you'd pay for 6.9 lbs.
No. This calculator focuses on the FBA fulfillment fee. Amazon storage fees depend on inventory volume and time of year, while referral fees depend on product category and sale price. Use the Amazon FBA Calculator for a broader profit view that includes referral fees, product cost, and margin.
Amazon's Revenue Calculator is designed for a broader profitability estimate and may include different assumptions, live marketplace data, referral fees, and account-specific details. This tool is intentionally narrower: it helps sellers check size tier and fulfillment fee impact from packaged dimensions and weight.
Learn how landed cost, markup, margin, fees, and shipping affect product pricing in our product pricing guide.
