About FyndCalc

FyndCalc is a set of 22 free online calculators for money, health, measurement, math, and everyday tasks. It is built and maintained by an independent developer. There is no account to create and nothing to pay.

How the calculators work

Each calculator uses a standard, published formula and shows it with your numbers filled in, so you can check the result yourself. The worked examples on each page are calculated by the same code as the calculator, so they can't disagree with it. Health and money pages list the sources their formulas come from.

The results are estimates based on the numbers and assumptions you enter. They are not financial, tax, legal, or medical advice. For a decision that matters, treat the result as a starting point and check it with a qualified professional.

Your data

The calculations run in your browser. FyndCalc doesn't send the numbers or text you enter anywhere. The site uses Google Analytics to count visits and see which calculators are used. The privacy policy has the details.

Contact

To report a wrong result, suggest a calculator, or ask a question, email jeffrey.oakes@protonmail.com. If you're reporting an error, include the page, the numbers you entered, and the result you expected.