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Free Finance Tools
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The story behind the math

Built for sellers who take their
profit margins seriously.

Free Finance Tools was created to solve a simple problem: most ecommerce fee calculators are either paywalled, outdated, or force you to create an account.

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Our Mission

We believe every seller — from a weekend crafter on Etsy to a 7-figure brand on Shopify — deserves transparent, instant access to their true unit economics. No guesswork, just solid numbers.

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Privacy by Design

Your financial data is your business. That's why all of our calculators run entirely in your browser. When you enter your costs, prices, or margins, that data never touches our servers. Period.

Always Free

These tools are 100% free to use. No premium tiers, no hidden exports, no sign-ups. Just fast, accurate math to help you grow your business and keep more of what you earn.

Ready to crunch your numbers?

Head over to our calculator suite and find the right tool for your platform today.

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Penny AI Assistant 🤖
Hi! I'm Penny, your AI finance assistant. Ask me about our calculators, fees, or how to improve your margins!
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