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Scientific Calculator

Type a calculation or use the keypad: brackets, powers, roots, trigonometry in degrees or radians, logarithms and factorials. Free and private.

Result

Type a calculation or press the keys.

Shortcuts: Ctrl+Enter run · Ctrl+Shift+C copy result · / search (use ⌘ on Mac)

Next steps

Done here? Use the Send to… menu on the result to carry it on to Percentage Calculator or Base Converter.

Free Online Scientific Calculator

A calculator for school, work and home. Type a sum such as sin(30)+2^3 or press the keys. It follows the normal order of operations and tells you in plain words where a mistake is. A calculator for brackets, powers, roots, trigonometry in degrees or radians, logarithms and factorials. Type the whole sum or use the keypad, and see the history of earlier answers.

How to use the scientific calculator

Type in the box or press the keys, then press "=" or the Enter key. The answer also shows while you type. "ans" means the result of your last "=" calculation, and the list under the keys keeps your recent calculations: press one to use it again.

Good to know

  • Functions need brackets: sqrt(16), sin(30), ln(e).
  • Check the Degrees / Radians switch before using sin, cos or tan.
  • 2pi and 3(4+5) work without a times sign.

Common mistakes

  • Leaving the switch on degrees when the angle is in radians, or the other way round.
  • Reading -2^2 as 4: the answer is -4. Write (-2)^2 for 4.

Frequently asked questions

What can I type in the box?
Numbers, + - × ÷ ^ (power), brackets, ! (factorial), % (divide by 100), the names pi, e and ans, and the functions sqrt, cbrt, sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, ln, log10, exp and abs. Functions need brackets, for example sin(30).
Does it use the usual order of operations?
Yes. Brackets first, then powers, then times and divide, then plus and minus. Powers go right to left, so 2^3^2 is 2^9 = 512, and -2^2 is -4 because the minus applies after the power.
What is the difference between degrees and radians?
It only changes how sin, cos, tan and their inverses read or give angles. In degrees sin(30) is 0.5. In radians sin(pi/6) is 0.5. Check the switch before you calculate.
Is it safe to paste any text in?
The calculator reads your text with its own small parser and never runs it as program code. Anything it does not understand is shown as an error with the position of the problem.
How big can the numbers be?
Results are shown with 12 digits. Factorials work for whole numbers from 0 to 170, because 171! is too large for a computer number. Very large or very small results use scientific notation such as 1e20.
Why does sin(180) not give exactly 0 in radians mode?
In radians mode 180 is a very large angle in radians, not half a turn. Switch to degrees to get sin(180) = 0.

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