Free tools for smarter online selling.
Know your real profit before you spend another dollar.
Free calculators for online sellers. Understand your margins, advertising break-even points, marketplace fees, and product pricing.
No signup · Free to use · Transparent formulas
Results are estimates. Formulas and assumptions are documented on each tool, and marketplace-specific rates are sourced from official documentation where they apply. Read the methodology. For how to interpret results, see the guides. For modeled scenarios built from the same engines, see analysis. Profit For Sellers is not affiliated with Shopify, Etsy, TikTok, or other marketplaces.
Popular Calculators
E-commerce Profit Calculator
Estimate profit after product cost, shipping, fees, and ads.
Shopify Profit Calculator
Model Shopify selling costs alongside product and ad spend.
Break-Even ROAS Calculator
Find break-even ROAS, maximum CPA, and target ROAS from unit economics.
Product Pricing Calculator
Work backward from costs and target margin to a selling price.
Etsy Fee Calculator
Estimate Etsy fees, net proceeds, profit, and break-even item price.
TikTok Shop Fee Calculator
Estimate TikTok Shop referral fees, creator commission, profit, and break-even item price.