About Us

CalcHub is a free collection of 100+ online calculators for finance, health, maths, science, electronics, unit conversion and everyday life, plus a simple and a scientific calculator, a binary/octal/hex converter and more. If a calculator is missing, search for it and we will build it for you.

Our promise: fast, accurate, easy tools that work on every phone, tablet and computer, with no sign-up. We show ads to keep the site free.

Results are estimates for information only – see our Disclaimer. Found a mistake? Please tell us.