Tools / Calculators

Math Calculator

From basic arithmetic to square roots, squares, and reciprocals — calculate instantly with clicks or your keyboard.

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Math Calculator

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Tool info

Category Calculators

Processing Directly in your browser

Data storage Not stored

Updated 2026-08-29

How to use

Click the number and operator buttons, or type them on your keyboard.

Use the √, x², 1/x, and % buttons for quick one-step functions.

Press = or Enter to see the result immediately.

FAQ

자주 묻는 질문

Q1. How do I use this calculator?

Click the number and operator buttons, or type digits, +, -, *, /, and Enter directly on your keyboard. AC clears everything, and ⌫ removes the last digit only.

Q2. Can it calculate square roots and squares?

Yes. The √ button calculates the square root, x² squares the number, and 1/x gives the reciprocal. For example, entering 9 and pressing √ returns 3.

Q3. What happens if I divide by zero?

An impossible calculation like dividing by zero shows Error on the screen. Press AC to reset and enter your numbers again.

Q4. Does it show the calculation in progress?

Yes. The expression you've entered so far (e.g. 12 + 5 =) appears above the result, so you can always see what's being calculated.

Q5. Is anything I enter saved on a server?

No. All calculations happen entirely in your browser and are never sent to or stored on a server.

Q6. Is decimal math accurate?

Standard arithmetic and decimal calculations work fine, but due to JavaScript's floating-point behavior, very long decimals can show tiny rounding errors. For precision engineering or accounting work, pair this with a dedicated tool.

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