Know exactly what you keep from every sale
Free fee & profit calculators for online sellers. Every number is quoted from the marketplace's official fee page, dated, and tested against the marketplace's own published examples — and we email you when the fees change.
Calculators
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eBay Fee & Profit Calculator
13.6% final value fee, per-order fee, category exceptions — and what you actually keep.
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PayPal Fee Calculator
3.49% + $0.49 and every other rate — plus what to charge to receive an exact amount.
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Profit Margin Calculator
Margin, markup and profit from any two numbers — and pricing for a target margin.
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Markup Calculator
Cost + markup → price, with the margin you're really earning (50% markup = 33% margin).
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Etsy Fee & Profit Calculator
All four Etsy fees on one sale — listing, 6.5% transaction, processing, Offsite Ads.
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Stripe Fee Calculator
2.9% + $0.30 plus the surcharges other calculators forget.
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Square Fee Calculator
In-person, online and keyed-in rates across Square's plans.
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Whatnot, Depop, Poshmark & Mercari Fees
Four resale apps, four different fee models — one calculator with each platform's verified rates.
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Compare All Marketplace Fees
One sale amount → what every platform takes, cheapest first.
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Food Cost Calculator
Recipe costing, food-cost percentage and menu pricing by target.
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eBay & Etsy Fees Explained (2026)
The plain-English guide: every fee, what it really applies to, and the five traps.