Scientific Calculator
Free online scientific calculator — trigonometry, logarithms, exponents, roots, and more.
What is a Scientific Calculator?
A scientific calculator performs advanced mathematical operations beyond basic arithmetic — including trigonometric functions (sin, cos, tan), logarithms (log, ln), exponents, square roots, and factorial. It is essential for students, engineers, scientists, and anyone working with complex math.
How to Use
Type numbers and operations using the buttons or your keyboard. Use the function buttons for trig (in degrees or radians), logarithms, powers, and roots. Press = or Enter to evaluate. Use AC to clear everything or ⌫ to delete the last character.
Keyboard Shortcuts
0-9 for digits, +, -, *, / for operations, Enter for equals, Escape for clear, Backspace to delete last character, . for decimal point, ( ) for parentheses.