About
Free business calculators, built by someone who has actually run businesses
Free Biz Tools provides browser-based calculators for entrepreneurs, small business owners, freelancers, ecommerce sellers, marketers, SaaS teams, operators, and property investors making business decisions. No signup, no paywall - just the math made visible.
Founder
Anton Jonson
Founder, Free Biz Tools
Anton is an entrepreneur with more than 30 years of experience building businesses across manufacturing, retail, ecommerce, and online. For the last 15 years he has run an online advisory agency, helping business owners structure, build, market, and optimise their online businesses.
Free Biz Tools grew out of that work: the same pricing, margin, loan, and marketing calculations Anton has walked clients through for years, turned into free, no-signup tools anyone can use directly.
Why this site exists
Most free calculator sites either hide the formula behind a lead-capture form or oversimplify the math to the point it is not actually useful for a real decision. Free Biz Tools is built the opposite way: every calculator shows its formula, a worked example, and what it does not account for, so you know when to double-check a result against your own numbers or a professional.
I have sat across the table from enough business owners making pricing and financing decisions on gut feel to know that a clear, honest calculator beats a black box every time.Anton Jonson
Free access
No account, paywall, or email capture required to use any calculator.
Browser-based
Calculator inputs are processed in your browser for quick, private estimates.
Regularly reviewed
Pages are reviewed as calculator logic, categories, and reference assumptions change.
Get in touch
Spot an error, an outdated assumption, or a calculator you would like to see added? Anton and the team read every message.