Scientific Calculator

Trig, logarithms, powers, roots, and more. Keyboard supported.

Keyboard supported. DEG/RAD affects trig functions.

About this calculator

This scientific calculator supports trigonometric functions (sin, cos, tan), logarithms (log base 10, natural log), square root, powers, factorials, absolute value, and the constants π and e. Toggle between degree and radian mode for trig functions.

Function reference

sin / cos / tan — trigonometric functions (use DEG/RAD toggle)
log — base-10 logarithm | ln — natural logarithm
√ — square root | x² — square | x^y — power
x! — factorial (integers 0–20) | |x| — absolute value
π ≈ 3.14159… | e ≈ 2.71828…

FAQ

When should I use DEG vs RAD?: Use DEG if your angles are in degrees (e.g. sin(90°) = 1). Use RAD if your angles are in radians (e.g. sin(π/2) = 1).
How do I enter a power like 2^10?: Type 2, then click x^y (which inserts ^), then 10, then =.