Free Online Calculator — 200+ Free Calculators for Math, Finance & Health | Calculator.Free

Basic<br>Scientific

DEG<br>RAD

sin<br>cos<br>tan<br>x^y

sin⁻¹<br>cos⁻¹<br>tan⁻¹

log<br>ln

n!

Ans

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🧮<br>Basic Calculator

🔬<br>Scientific Calculator

🏠<br>Mortgage Calculator

🧾<br>Income Tax Calculator

⚖️<br>BMI Calculator

Percentage Calculator

💳<br>Loan Calculator

🍽️<br>Tip Calculator

🎂<br>Age Calculator

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Categories

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🧾Tax & Salary<br>Income tax, take-home pay, VAT and sales tax by country.

❤️Health & Fitness<br>BMI, calories, body metrics and fitness.

➗Math<br>Percentages, fractions, algebra, geometry.

📈Statistics<br>Averages, probability, tests and distributions.

🔁Unit Converters<br>Length, weight, temperature, data and more.

⚛️Science & Engineering<br>Physics, electronics and chemistry tools.

📅Date & Time<br>Age, date differences, durations, timers.

🧮Everyday<br>Tips, grades, fuel and day-to-day math.

📐Graphing & Advanced<br>Scientific, graphing, geometry and 3D calculators.

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Free online calculators for every problem

Calculator.Free is a free collection of 200+ online calculators for money, health, math and everyday life. Work out a mortgage or loan payment, estimate income tax, check your BMI or daily calories, solve an equation, convert units, or plan a project — each tool is fast, accurate and works on any device, with no sign-up required.

Every calculator shows a clear result the moment you type, plus detailed breakdowns, charts and amortization or projection tables where they help. Financial and health tools adapt to your country's currency, tax bands and units, and the whole site is translated into 100 languages.

Frequently asked questions

Are the calculators really free?Yes — every calculator on Calculator.Free is completely free to use, with no sign-up, no download and no limits.

How accurate are the results?Each calculator uses standard, published formulas (for example the amortization formula for loans or Mifflin-St Jeor for calories) and states the method it uses. Results are precise estimates for guidance, not professional financial, medical or tax advice.

Do I need to create an account?No account is needed. Open any calculator and start immediately — nothing is stored and no personal details are required.

Which calculators do you have?200+ across finance, health & fitness, math, statistics, science & engineering, unit conversion, date & time and everyday life. Browse the full list on the All Calculators page.

Can I use the calculators in my own language?Yes. The site is translated into 100 languages — use the language menu, and financial tools switch to your local currency and tax rules.

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