How to use the scientific calculator
- Tap the keys or type on your keyboard. The answer updates under the display as you go.
- Press = or Enter to keep the result in the history. Tap a number or function next to start fresh, or an operator to continue from the answer.
- Choose Deg or Rad before using trigonometry.
- Use M+, M−, MR, and MC to store and recall a number, and tap a history line to use it again.
Results show up to 10 significant digits. Exponentiation is right-associative, so 2^3^2 is 2^9, and a minus sign binds more loosely than a power, so −2^2 is −4.
Questions
Are my calculations sent anywhere?
No. The expression is read and worked out by a small parser that runs in your browser. Nothing is uploaded, stored, or tracked, and the history disappears when you close the page.
Can I type with my keyboard?
Yes. Click the display and type, for example 2*(3+4)^2 or sin(30)+sqrt(16). Use + - * / ^ and ! for factorial, and press Enter for the result or Escape to clear. Missing closing brackets are added for you.
How do degrees and radians work?
The Deg/Rad key sets the angle unit for sin, cos, and tan, and for the answers of the inverse functions. In degree mode sin(30) is 0.5. In radian mode sin(π ÷ 6) is 0.5. The current mode is shown above the display.
What functions and constants are supported?
Addition, subtraction, multiplication, division, powers (^), percent (%), factorial (!), square root, cube root, sin, cos, tan and their inverses, sinh, cosh, tanh, ln, log (base 10), exp, abs, the constants π and e, and Ans for your previous answer. Implied multiplication such as 2π or 3(4+1) works.
Why do I get an error?
The display explains it: dividing by zero, a square root or logarithm of a number that does not allow it, a factorial of a non-integer, or a typo such as an unknown word. Fix the expression and press = again.
Credits
Built by OneTooling using standard browser features. No third-party code runs on your data.