Use this free Amazon FBA fee calculator to find your true profit per unit before you launch. Enter your selling price, product cost, and Amazon fees to see exactly what you'll earn after all FBA costs — referral fees, fulfillment fees, storage, and PPC advertising.
Whether you're researching amazon fba calculator for beginners or need a precise FBA profit calculator for an existing product, this tool gives you per-unit economics and monthly projections in seconds.
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Calculate your true profit per unit sold on Amazon
FBA (Fulfillment by Amazon) means Amazon stores, picks, packs, and ships your products. Costs include a referral fee (6–17% of sale price by category), an fulfillment fee (~$3.22–$15.00 per unit depending on size and weight), monthly storage fees ($0.75–$2.40/cu ft), and optional PPC advertising costs. This FBA calculator adds up all of these so you can see your true net profit per sale.
Start with your selling price, subtract the Amazon referral fee (your category's % rate × price), subtract the FBA fulfillment fee (based on size tier), subtract estimated storage cost, subtract PPC cost per sale (CPC ÷ conversion rate), and finally subtract your product cost plus shipping to Amazon. The result is your net profit per unit. Use our FBA calculator above to run this automatically.
A healthy FBA profit margin is typically 20–35% after all Amazon fees. Margins below 15% leave little room for advertising, returns, or unexpected fee changes. If your margin drops below 10%, consider raising your price or finding a lower-cost supplier. Our amazon seller fee calculator shows your margin in real-time as you adjust inputs.
Three high-impact ways: (1) Reduce product size and weight — FBA fulfillment fees jump significantly at 1 lb and 2 lb thresholds; (2) Negotiate better rates with suppliers to lower product cost; (3) Improve conversion rate to reduce PPC cost per sale. Tools like Jungle Scout also help you validate demand before you invest in inventory.
Amazon updates FBA fees annually. As of 2026: referral fees range 6–17% by category; standard size fulfillment fees are ~$3.22–$6.50 depending on weight; oversize fees go up to $15.00; storage fees are $0.78–$2.40/cu ft monthly. Enter current rates in our FBA fee calculator to get accurate results for your specific product.
Yes. This tool is built for beginners researching their first Amazon product. Enter your estimated selling price and product cost — even rough guesses work. The default values (39.99 selling price, 12.00 product cost, standard size tier) reflect a typical beginner-friendly product. Adjust any field to match your specific numbers.
We may earn a commission if you click above. FBA calculator is free to use.
| Feature | Spreadsheet | This FBA Calculator |
|---|---|---|
| Real-time FBA fee calculation | ❌ Manual entry | ✓ Automatic |
| PPC cost per acquisition | ❌ Separate formula | ✓ Built in |
| Monthly profit projection | ❌ Add rows | ✓ Instant |
| Mobile-friendly | ❌ Hard on phone | ✓ Yes |
| No signup required | ✓ | ✓ |
FBA fees are estimates based on 2026 rate tiers. Amazon fees change frequently — verify with the official Amazon FBA calculator before making purchasing decisions.