How to use the scientific calculator
This scientific calculator evaluates expressions with basic arithmetic (+, −, ×, ÷), powers (^), square roots (√), the constants π and e, and the trigonometric functions sin, cos, and tan. Type your expression in the input box—for example 2+3*4, sin(0.5), 2^10, or √16—then click "Get result" or press Enter. You can also build the expression using the on-screen keypad. The result appears below the button; if the expression is invalid, "Error" is shown. Clear with C or Escape, and use ⌫ to delete the last character.
Trigonometric functions take angles in radians. For degrees, convert first: multiply by π/180 (e.g. 30° = π/6 ≈ 0.5236). So sin(π/2) equals 1. Use parentheses for order of operations and for function arguments (e.g. sin(0.5), √16). The calculator supports keyboard input: numbers, +, -, *, /, Enter, Backspace, and parentheses work as expected. It runs in your browser with no sign-up and works on phones and tablets; the keypad and layout are responsive for touch.
Use this scientific calculator for algebra, trigonometry, physics, or any quick computation that needs powers, roots, or trig. The page is optimized for search so you can find it easily when you need an online scientific calculator for homework, exams, or everyday math.