A full-featured scientific calculator with trigonometric functions, logarithms, powers, roots, factorials and constants. Works entirely in your browser with no sign-up.
Use the on-screen calculator buttons. Enter numbers, choose functions and press = to calculate. Press C to clear.
Press Calculate. All results appear instantly in your browser. No data is sent to any server.
See your complete results with all key figures. Use Copy or Download to save them for your records.
Basic arithmetic, powers and roots, trigonometric functions (sin, cos, tan and inverses), logarithms (log and ln), factorial, pi and e constants.
Click sin, cos or tan and enter the angle in degrees. The calculator works in degrees by default.
BODMAS/PEMDAS: Brackets first, then Orders (powers), then Division and Multiplication, then Addition and Subtraction.
Enter the number and press n!. For example 5! = 120. Handles up to 170! before floating-point limits.
log is base 10 (log(1000) = 3). ln is the natural logarithm base e (ln(e) = 1).
Type the number and press +/- to toggle its sign.
Pi is 3.141592653589793 — the ratio of any circle circumference to its diameter.
Press x^y for powers and the root symbol for square roots. Use the n button for nth roots.
