About

Profit For Sellers is a free collection of calculators for people who sell online. It exists to make unit economics, marketplace fees, pricing, and advertising break-even points easier to inspect before you spend more on ads or inventory.

The tools are for independent sellers, operators, and anyone who needs a transparent estimate rather than a black-box dashboard. There is no signup. Calculations run in the browser from the numbers you enter.

Current calculators

These six tools are available now:

• 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.

How we calculate

Each live calculator uses a documented formula. Marketplace-specific rates are included only when they are sourced from official documentation and shown with a last-verified date. The same inputs produce the same outputs. Results are estimates for planning, not accounting, tax, legal, or marketplace advice.

More detail is on the methodology page and on each calculator page.

Independence

Profit For Sellers is not affiliated with, endorsed by, or part of Shopify, Etsy, TikTok, or other marketplaces unless a page explicitly says otherwise. We publish independent estimates; we do not operate those platforms.

Free tools

The mission is to keep practical seller calculators free to use, with formulas you can read. Advertising, analytics, and affiliate programs are not part of the current site.