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Calculators

Free calculators for financial ratios and everyday business numbers. Each one shows its formula and every step, and runs in your browser.

Calculators for business owners

Ratio calculators

Each ratio page includes its own calculator.

How these calculators work

  • Every calculator runs in your browser. The figures you enter are not sent anywhere or stored.
  • Each result shows the formula and every step of the working, so you can check it by hand.
  • All calculators share one set of formula definitions, tested against hand-checked examples, so a ratio gives the same answer on every page.
  • Where sources define a measure differently, the calculator offers the variants and says which one it uses.
  • You can embed any calculator on your own site with the code on its page.