Free calculators for online sellers. Calculate net profit margins, marketplace fees (Amazon, eBay, Etsy, Shopify), payment processing costs (Stripe, PayPal), and true ROI for every product you sell.
Calculate eBay final value fees and your net profit on every sale. Category-specific UK & US rates, checked for 2026.
Estimate Amazon referral fees, FBA fulfilment fees, net profit and ROI for UK and US sellers. Rates checked for 2026.
See exactly what Poshmark takes — $2.95 flat under $15 or 20% commission — and your true payout and profit on every sale.
Calculate Mercari's flat 10% selling fee (no processing charge since 2025) and your exact payout and profit on any sale.
Depop dropped its US selling fee — just 3.3% + $0.45 processing (plus optional 12% boost). See your exact payout.
Live selling fees decoded: 8% commission + 2.9% + $0.30 processing. See your true payout per sale and per stream.
StockX seller fees by level (8–9.5% + 3% processing), shipping bonuses, and your true payout on sneakers and collectibles.
Shipped orders pay 10% ($0.80 min); local pickup is free. Compare both and see your exact payout.
Estimate your net TikTok Shop earnings after referral fees, affiliate commissions, COGS, and shipping. Built for TikTok sellers and creators.
See how Stripe fees affect your gross revenue and net payout for every transaction.
Calculate gross profit, net profit, margin percentage, and ROI for online sales.
Calculate eBay seller fees, net profit, and true cost per sale for every listing.
Compare PayPal fees, net payout, and invoice costs to keep more of every sale.
Calculate Etsy seller fees including listing fees, transaction fees, and payment processing costs.
Calculate Shopify store profits after subscription fees, transaction fees, COGS, and marketing costs.
Calculate Amazon FBM referral fees, closing fees, and net profit for marketplace sellers.
16
Calculators
6
Platforms
2026
Fee Schedules
Free
No Sign-Up
