What determines FBA fulfillment fees?

Unit weight and shipping dimensions; products classified as 'Small Standard' incur significantly lower fulfillment fees than 'Large Standard' or 'Oversize'.

Does this include monthly inventory storage fees?

Yes, standard non-peak ($0.87/cu ft) and Q4 holiday peak ($2.40/cu ft) storage estimates are included.

What is a healthy FBA net margin?

Most successful FBA sellers target at least a 25% to 35% net profit margin after all Amazon fees and advertising spend.

Is this calculator free?

100% free with no account required.

Is this Amazon FBA Fee Calculator (Fulfillment & Referral Margins) completely free to use?

Yes, the Amazon FBA Fee Calculator (Fulfillment & Referral Margins) on Gronex.ai is 100% free forever. There are no fees, no subscriptions, no credit card requirements, and no usage limits.

Is my data private and secure when using this free online Amazon FBA Fee Calculator (Fulfillment & Referral Margins)?

Yes. All processing runs 100% client-side directly in your browser. Your inputs and data never leave your device and are never stored on any server.

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Free Amazon FBA Fee Calculator (Fulfillment & Referral Margins) Online

Calculate Amazon FBA fulfillment fees, category referral fees (8% to 15%), and storage costs to forecast true net profit per unit. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.

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Amazon FBA Fee Calculator (Fulfillment & Referral Margins)

Calculate Amazon FBA fulfillment fees, category referral fees (8% to 15%), and storage costs to forecast true net profit per unit.

How It Works

Enter Retail Price & Cost of Goods (COGS)

Input selling price and manufacturing/landed cost.

Select Category

Choose category (Electronics, Apparel, Home, Beauty) to apply exact referral percentage.

Input Package Dimensions & Weight

Set tier (Small Standard, Large Standard, Oversize).

Inspect Net Margin & ROI

View net dollar profit, profit margin %, and return on investment.

Frequently Asked Questions

Amazon charges a category-specific commission (typically 15% for most goods, 8% for consumer electronics) on the total sales price.

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