JavaScript Math Reference
Complete Math Reference
Revised July 2025
| Name | Description |
|---|---|
| abs(x) | Returns the absolute value of x |
| acos(x) | Returns the arccosine of x, in radians |
| acosh(x) | Returns the hyperbolic arccosine of x |
| asin(x) | Returns the arcsine of x, in radians |
| asinh(x) | Returns the hyperbolic arcsine of x |
| atan(x) | Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians |
| atan2(y, x) | Returns the arctangent of the quotient of its arguments |
| atanh(x) | Returns the hyperbolic arctangent of x |
| cbrt(x) | Returns the cubic root of x |
| ceil(x) | Returns x, rounded upwards to the nearest integer |
| clz32(x) | Returns the number of leading zeros in a 32-bit binary representation of x |
| cos(x) | Returns the cosine of x (x is in radians) |
| cosh(x) | Returns the hyperbolic cosine of x |
| E | Returns Euler's number (approx. 2.718) |
| exp(x) | Returns the value of Ex |
| expm1(x) | Returns the value of Ex minus 1 |
| f16round(x) | Returns x, rounded downwards to the nearest integer |
| floor(x) | Returns x, rounded downwards to the nearest integer |
| fround(x) | Returns the nearest (32-bit single precision) float representation of a number |
| LN2 | Returns the natural logarithm of 2 (approx. 0.693) |
| LN10 | Returns the natural logarithm of 10 (approx. 2.302) |
| log(x) | Returns the natural logarithmof x |
| log10(x) | Returns the base-10 logarithm of x |
| LOG10E | Returns the base-10 logarithm of E (approx. 0.434) |
| log1p(x) | Returns the natural logarithm of 1 + x |
| log2(x) | Returns the base-2 logarithm of x |
| LOG2E | Returns the base-2 logarithm of E (approx. 1.442) |
| max(x1,x2,..) | Returns the number with the highest value |
| min(x1,x2,..) | Returns the number with the lowest value |
| PI | Returns PI (approx. 3.14) |
| pow(x, y) | Returns the value of x to the power of y |
| random() | Returns a random number between 0 and 1 |
| round(x) | Rounds x to the nearest integer |
| sign(x) | Returns the sign of a number (checks whether it is positive, negative or zero) |
| sin(x) | Returns the sine of x (x is in radians) |
| sinh(x) | Returns the hyperbolic sine of x |
| sqrt(x) | Returns the square root of x |
| SQRT1_2 | Returns the square root of 1/2 (approx. 0.707) |
| SQRT2 | Returns the square root of 2 (approx. 1.414) |
| tan(x) | Returns the tangent of an angle |
| tanh(x) | Returns the hyperbolic tangent of a number |
| trunc(x) | Returns the integer part of a number (x) |
Complete JavaScript Reference
For a complete reference to all JavaScript properties and methods, with full descriptions and many examples, go to:
W3Schools' Full JavaScript Reference.
The reference inludes all JavaScript updates from 1999 to 2025.