Scientific Calculator
Type a calculation or use the keys. Trig works in degrees or radians, and every answer goes into your history.
Enter gives the answer. Up arrow brings back the last calculation. Esc clears.
History
About this tool
This scientific calculator covers what a school calculator does: trigonometry in degrees or radians, logarithms, powers, roots, factorials and scientific notation. Type a whole expression the way you would write it, or tap the on-screen keys. When the answer is a simple fraction, it shows that too, and your last 30 calculations stay in a history list you can click to reuse.
Tips
- You can skip the × sign: 2pi, 3(4+1) and 5sqrt(2) are all read as multiplications. A comma works as a decimal point too, so 2,5 is the same as 2.5.
- log is base 10 and ln is base e. log(1000) = 3 and ln(e) = 1. Mixing them up changes every answer in a logarithm question.
- Use brackets to make the order clear: 1/(2×3) is not the same as 1/2×3.
FAQ
- What happens when I get an error?
- The calculator explains the problem under the input instead of just showing Error. For example, tan 90° is undefined in degrees, and the square root of a negative number has no real answer.
- Does it work on a phone?
- Yes. On phones the calculator's keypad replaces the phone keyboard, so the maths keys are there from the start.
- Is my history saved?
- Your last 30 calculations are kept in this browser's local storage on this device. Nothing is uploaded. Clear history removes them, and so does clearing your browser data.