VentriTools

VentriTools is a library of focused, free calculators for people who run businesses—online and off. Choose a tool, enter your own numbers, and get a direct result without creating an account, signing up, or going through a spreadsheet.

The calculators cover common decision areas across SaaS, e-commerce, finance, marketing, freelance/agency pricing, marketplaces, content, mobile, acquisitions, and more. Each tool is designed to explain its working so you can follow the logic behind the output.

Because inputs stay in your browser and the site doesn’t require sign-in, you can run scenarios quickly and iterate with different figures. Use the tools to sanity-check economics, projections, and unit economics before you make a call.

Do I need to create an account to use the calculators?

No—VentriTools is free to use without an account or sign-up process. You can run tools directly in your browser.

Are my inputs stored or logged?

Your numbers stay in your browser. There’s no sign-in requirement and inputs aren’t logged.

Can I see how the results are calculated?

Yes. Every calculator shows its formula/working so you can verify the logic or rebuild it yourself.

What kinds of calculations are available?

Tools span categories like SaaS (MRR, churn, LTV), e-commerce (margins, shipping, ad spend), finance (break-even, profit margin), marketing (A/B testing significance, ROI), and more.

Are the calculators suitable for professional financial decisions?

They’re best for estimation and planning. All calculations are estimates, not financial advice—use them as a starting point and validate as needed.