Scientific Calculator
A scientific calculator with trigonometric, logarithmic, power and constant functions, evaluated locally with decimal precision.
How to use
Type an expression directly or build it with the function buttons, then press Calculate or Enter. Functions: sin, cos, tan, asin, acos, atan (trigonometry), ln (natural logarithm), log (base-10 logarithm), sqrt (square root), cbrt (cube root), abs (absolute value) and exp (e raised to a power). Constants: pi, e and tau (2π). Operators: + − * / plus ^ (power), % (remainder) and ! (factorial).
The angle unit for trigonometric functions switches between DEG (degrees) and RAD (radians); DEG is the default. Example: in DEG mode, sin(30) = 0.5.
Notes
Expressions are evaluated by a dedicated parser in your browser; eval is never used and nothing is sent to a server. Factorials accept integers from 0 to 170 only. Undefined operations, such as division by zero or the square root of a negative number, are shown as errors.
FAQ
What is the difference between log and ln?
log is the base-10 logarithm (log(1000) = 3); ln is the natural logarithm, base e.
Should I use DEG or RAD?
Use DEG when you think of angles in degrees (30°), and RAD when you work in radians. DEG is the default.