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Calculator
What each button does
New to this calculator? Here's a quick guide to every key so you can calculate faster.
- AC
- Clears the current calculation and starts fresh.
- ⌫
- Deletes the last digit you typed.
- ÷ × − +
- Basic arithmetic: divide, multiply, subtract, add.
- %
- Converts the current number to a percentage (divides by 100).
- √
- Takes the square root of the number on screen.
- MC
- Memory Clear — wipes the saved number.
- MR
- Memory Recall — brings the saved number back.
- M+
- Memory Add — adds the current number to memory.
- =
- Calculates the result of your expression.
Keyboard shortcuts: type numbers and + - * / directly, press Enter to calculate, Esc to clear, and Backspace to delete.
Find the right tool for the job
Jump straight into the calculator you need, organized by everyday use.
Financial Calculators
Plan your money with confidence. Estimate mortgage payments, loan interest, and investment growth using real numbers.
Health Calculators
Understand your body metrics. Track your BMI, daily calorie needs, and basal metabolic rate for better health decisions.
Math Calculators
Solve everyday problems. Work out percentages, discounts, fractions, and scientific equations without the guesswork.
Education Calculators
Stay on top of your studies. Calculate grades, final exam targets, and GPA to plan your academic success.
Life Calculators
Measure time and milestones. Find your exact age, date differences, and important life-stage dates.
Why people use this calculator
Simple by design, so you can get the answer and move on.
Answers as you type
No waiting for a page to reload. The result updates the moment you enter your numbers.
Nothing leaves your device
Every calculation happens in your browser. Your financial or health data stays private.
No downloads required
Open the page on your phone, tablet, or laptop and start calculating immediately.
Common questions
Do I have to pay to use these calculators?+
No. Every tool on this page is completely free. There are no hidden fees, premium tiers, or paywalls.
Is my information saved or shared?+
No. All calculations run locally on your device. Your numbers are never sent to a server or stored.
Can I use this on my phone?+
Yes. The page is fully responsive and works on phones, tablets, and desktops without an app.
What does the % button do?+
It divides the number on screen by 100. For example, 50 % becomes 0.5. For percentage-of-a-number math (like "10% of 200"), use the Percentage Calculator in the Math category.
What is the most popular calculator here?+
The basic calculator is great for quick math, while the mortgage and BMI calculators are the most visited for financial and health planning.