Scientific Calculator

Use your keyboard or click the buttons. Calculation history included.

🖨 Calculator

 
0
7 8 9 + Back
4 5 6 Ans
1 2 3 × M+
0 . EXP / M-
± RND AC = MR
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
Last 20 calculations (cleared on refresh)

History

Key Reference

AC All Clear   M+ Memory Add   M- Memory Subtract   MR Memory Recall   Back Backspace   Ans Last Answer   RND Random Number   EXP Power of 10

sin Sine   cos Cosine   tan Tangent   ln Natural Log   log Log base 10   √x Square Root   x2 Square   xy Power   n! Factorial   π Pi   e Euler's Number

Keyboard Shortcuts

0-9 Numbers   + - * / Operators   . Decimal   Enter Equals   Backspace / Delete Erase   Esc or Ctrl+Backspace Clear All

S sin   C cos   T tan   L ln   P π   E e   A Ans   Alt+C Clear All

Frequently Asked Questions

Is this calculator completely free?
Yes, this calculator is 100% free with no signup required. It runs entirely in your browser — your calculations never leave your device.
Can I use my keyboard with this calculator?
Yes! Use number keys, operators (+, -, *, /), Enter for equals, Backspace to delete, Esc or Ctrl+Backspace to clear. Also supports S for sin, C for cos, T for tan, L for ln, P for pi, and E for Euler's number.
Is my data private?
Absolutely. All calculations happen locally in your browser using JavaScript. No data is sent to any server. Your calculations remain completely private.
Does it work on mobile devices?
Yes, the calculator is fully responsive and works on phones, tablets, and desktop browsers. No app installation required.
What is the difference between Deg and Rad mode?
Deg (Degree) mode uses degrees (0-360°) for trigonometric functions. Rad (Radian) mode uses radians (0-2π). Choose based on the unit of your angles.

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