Ecommerce calculators for pricing, fees, and ads
Know your real profit before you price, launch, or scale ads.
Run quick estimates for marketplace fees, payment processing, product costs, fulfillment, refunds, and ad spend. Every calculator shows the formula and the assumptions behind the result.
Calculator library
Start with a specific fee calculator, then use the margin and ROAS tools to decide whether the order still works after advertising and fulfillment costs.
Shopify fee calculator
Estimate Shopify Payments, premium card, international card, and third-party transaction fees.
Stripe fee calculator
Calculate net received, effective rate, and gross-up charge for Stripe card payments.
PayPal fee calculator
Estimate PayPal Checkout, card payment, fixed fee, and international commercial fees.
Etsy profit calculator
Combine listing fees, transaction fees, payment processing, offsite ads, and fulfillment costs.
Amazon FBA profit calculator
Use adjustable referral, FBA, storage, inbound shipping, PPC, and return reserve inputs.
Profit margin calculator
Build a true per-order margin waterfall from price to net profit after ads.
ROAS calculator
Compare actual ROAS against break-even ROAS using full cost structure.
Break-even ROAS calculator
Find the ROAS and max CPA needed to protect contribution margin and target profit.
How to use the calculator stack
- Use platform fee calculators first to estimate what each processor or marketplace takes from the order.
- Move to the profit margin calculator to include product cost, fulfillment, returns, advertising, and overhead.
- Use the ROAS calculators before scaling ads. A campaign can show a high ROAS and still lose money if contribution margin is thin.