justyourcalculatorAbout JustYourCalculator
Free, private calculators, funded by clearly labeled ads.
What JustYourCalculator is
JustYourCalculator publishes 204 free calculators for money, health, math and everyday life. The tool definitions contain the formulas, inputs and explanations used by the pages. Calculators provide estimates and worked examples; they are not professional advice.
How it's funded
Pages show a small number of clearly labeled ads. That's how every calculator stays free, with no sign-up.
Your data
Calculations run in your own browser. Share links place inputs in a URL, so anyone with the link can read them; opening it also sends that URL to the hosting server. Currency tools request public exchange rates. See the privacy policy before sharing sensitive information.
How the tools are built
Charts and calculations are our own code. Currency rates come from the European Central Bank via frankfurter.app.
Limits and sources
Financial calculations depend on the rate, term, fees and compounding assumptions you enter. A loan estimate is not a lender quote. Health formulas describe populations and cannot diagnose a condition or prescribe a diet. Check the explanation and reference links on the calculator you use, and consult a qualified professional for decisions that affect your health or finances.
Corrections
If a result looks wrong, keep the calculator name, inputs, units and expected result so the issue can be reproduced. Remove personal information before sending a report. We do not claim independent clinical or financial review; named reviewer credentials will only be published when a real reviewer has verified the relevant tool.