Amazon FBA Fee Calculator (2026)
Estimate the US FBA size tier, shipping weight, per-unit fulfillment fee, and a monthly fulfillment plus storage total. Every dollar amount comes from the FBA fulfillment and storage guides on this site, or from Amazon's published bulky size limits. Bands those sources do not price show See Amazon's rate card.
Small standard fees are published for all three 2026 price bands. Large standard and above are published on this site as one standard rate card, used here for $10 to $50.
Apparel and dangerous goods have separate Amazon rate cards. This site publishes only an approximate gap, so those categories show See Amazon's rate card instead of a calculated fee.
Leave this on automatic. The guides do not publish the small-standard dimension cutoff, so units of 16 oz or less inside the standard-size envelope show both tiers.
Example volume so the monthly total is visible. It is not an Amazon figure.
Months of cover. 100 units a month held for 2 months prices storage on 200 units.
Unit weight: 3 lb
Dimensional weight: 2.302 lb (cubic inches ÷ 139)
Cubic feet: 0.1852
Sorted sides: 10 × 8 × 4 in. Length plus girth: 34 in.
Size tier
Large standard-size
Shipping weight: 3 lb (greater of unit and dimensional weight)
Per-unit fulfillment fee
$7.21
Base fee $6.97 + fuel surcharge $0.24
Base fulfillment fee
$6.97
Large standard, 3 to 20 lb, $10–$50 rate card: $6.97 plus $0.08 for each 4 oz interval over 3 lb (0 intervals).
Fuel and logistics surcharge
$0.24
3.5% of the $6.97 fulfillment fee, rounded to the cent. Effective April 17, 2026. Storage is excluded.
Monthly storage for one unit
$0.14
Standard-size monthly storage, January–September, at $0.78 per cubic foot. Aged-inventory surcharges are not included.
Rate $0.78 per cubic foot. The fuel surcharge is not applied to storage.
Monthly fulfillment
$721.00
Per-unit fulfillment fee, including the fuel surcharge, times monthly units.
Monthly storage
$14.44
Cubic feet per unit times the monthly storage rate times monthly units times average months on hand. This treats average storage months as months of cover.
Monthly fulfillment + storage
$735.44
Monthly fulfillment, including fuel, plus monthly storage. Referral fees, inbound placement, prep, and aged-inventory surcharges are not included.
- Shipping weight is the greater of unit weight and dimensional weight (cubic inches ÷ 139).
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Monthly units are prefilled. The request uses the same quote form as the other calculators.
How this estimate is built
Size tier uses the packaged dimensions and unit weight. Standard-size is the storage guide's envelope: at or under 20 lb and within 18 × 14 × 8 inches. Small bulky and large bulky use the limits in Amazon's October 16, 2025 Global Selling notice, effective January 15, 2026. A unit past the large bulky limits is extra-large.
Shipping weight for small standard, and for extra-large units over 150 lb, is the unit weight. For every other tier it is the greater of unit weight and dimensional weight. Dimensional weight is length × width × height in inches ÷ 139.
When the fulfillment fee is a single published figure, the result adds the 3.5000000000000004% fuel and logistics surcharge from April 17, 2026. The surcharge is not applied to storage. Monthly fulfillment multiplies that per-unit total by your unit count. Monthly storage multiplies cubic feet by the seasonal rate, the unit count, and average months of cover.
The $4.60 large standard example in the FBA fulfillment fees guide is one of the sourced point fees. Ranges in that guide, apparel, dangerous goods, and the small bulky tier stay on See Amazon's rate card.
Sample products
Large standard, 3 lb, $10–$50
10 × 8 × 4 in and 3 lb. Dimensional weight stays under the scale weight, so the 3 lb rate applies.
- Large standard-size. Shipping weight 3 lb. Fulfillment fee including fuel: $7.21.
Guide example: large standard, 12–16 oz
8 × 6 × 2 in and 14 oz, priced like the fulfillment guide's $24.99 worked example. Size tier is set to large standard.
- Large standard-size. Shipping weight 0.875 lb. Fulfillment fee including fuel: $4.76.
Small standard, under $10, 2 oz or less
5 × 3 × 0.4 in and 2 oz. Size tier is set to small standard so the low-price band has one fee.
- Small standard-size. Shipping weight 0.125 lb. Fulfillment fee including fuel: $2.52.
Small bulky, fee not on this site
30 × 12 × 10 in and 8 lb. It fits the 2026 small bulky limits and does not fit standard-size.
- Small bulky. Shipping weight 25.899 lb. Fulfillment fee including fuel: See Amazon's rate card.
Small standard fees used here
Non-apparel small standard fees by price band, from the fulfillment fees guide. These are the figures the calculator uses for that tier.
| Shipping weight | Under $10 | $10–$50 | Over $50 |
|---|---|---|---|
| 2 oz or less | $2.43 | $3.32 | $3.58 |
| 2+ to 4 oz | $2.49 | $3.42 | $3.68 |
| 4+ to 6 oz | $2.56 | $3.45 | $3.71 |
| 6+ to 8 oz | $2.66 | $3.54 | $3.80 |
| 8+ to 10 oz | $2.77 | $3.68 | $3.94 |
| 10+ to 12 oz | $2.82 | $3.78 | $4.04 |
| 12+ to 14 oz | $2.92 | $3.91 | $4.17 |
| 14+ to 16 oz | $2.95 | $3.96 | $4.22 |
Large standard and oversize rows
The fulfillment guide publishes these as the standard rate card. This calculator uses a row only when it is a single fee or a per-pound formula. A range stays on See Amazon's rate card.
| Size tier | Shipping weight | Published fee |
|---|---|---|
| Large standard | 4 oz or less | $3.73 |
| 4+ to 12 oz | $3.95 – $4.20 | |
| 12 oz to 1.5 lb | $4.60 – $5.42 | |
| 1.5 to 3 lb | $5.57 – $6.67 | |
| 3 to 20 lb | $6.97 + $0.08 per 4 oz over 3 lb | |
| Large bulky | 0 to 50 lb | $9.66 + $0.38/lb over first lb |
| Extra-large | 0 to 50 lb | $26.38 + $0.38/lb over first lb |
| 50 to 150 lb | $40.17 – $54.86 base + $0.75/lb | |
| 150+ lb | $195.00 + $0.19/lb over 151 lb |
Monthly storage rates used here
| Size tier | January–September | October–December |
|---|---|---|
| Standard-size | $0.78 / cu ft / mo | $2.40 / cu ft / mo |
| Oversize (bulky / extra-large) | $0.56 / cu ft / mo | $1.40 / cu ft / mo |
Aged-inventory surcharges in the storage guide are approximate ranges, so they are not added.
Sources and effective dates
WarehousingCosts.com, Amazon FBA Fulfillment Fees (2026)
Published or reviewed July 2026. Effective January 15, 2026 rate card; fuel surcharge April 17, 2026.
Non-apparel small standard fees for all three price bands; the $10–$50 large standard, large bulky, and extra-large rows; dimensional weight divisor 139; the 3.5% fuel surcharge; the Overmax range.
WarehousingCosts.com, Amazon FBA Storage Fees (2026)
Published or reviewed July 2026. Effective January–September and October–December rates as reviewed July 2026.
Standard-size storage at $0.78 and $2.40 per cubic foot, oversize storage at $0.56 and $1.40 per cubic foot, and the 18 × 14 × 8 in standard-size envelope.
Amazon Global Selling, 2026 US referral and FBA fee notice
Published or reviewed October 16, 2025. Effective January 15, 2026.
Small bulky limits (37 × 28 × 20 in, length plus girth 130 in, under 50 lb) and large bulky limits (59 × 33 × 33 in, length plus girth 130 in, under 50 lb). This notice does not include the per-unit fee table.
Amazon's bulky size limits: Global Selling notice, October 16, 2025. Seller Central Fee Preview remains the per-SKU source when this page says See Amazon's rate card.
Amazon FBA fee calculator FAQs
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Request a Free QuoteRelated guides
Amazon FBA Fulfillment Fees
The 2026 rate card these fulfillment figures are copied from.
Amazon FBA Storage Fees
Monthly per-cubic-foot rates, peak season, and aged inventory.
Amazon FBA vs 3PL
When the fulfillment fee stops being the cheaper path.
FBA Prep Cost Calculator
Prep-center cost before inventory reaches an FBA fee.
3PL Cost Calculator
Storage, pick and pack, and shipping outside Amazon.
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