The dart:math library in Dart provides a rich set of mathematical functions, constants, and utilities that are essential for performing common mathematical operations in Dart applications.

Whether you need to calculate trigonometric functions, generate random numbers, or perform complex mathematical calculations, the dart:math library has got you covered.

The dart:math library (API reference) provides common functionality such as sine and cosine, maximum and minimum, and constants such as pi and e. Most of the functionality in the Math library is implemented as top-level functions.

To use this library in your app, import dart:math.

import 'dart:math';

Trigonometry

The Math library provides basic trigonometric functions:

// Cosine
assert(cos(pi) == -1.0);

// Sine
var degrees = 30;
var radians = degrees * (pi / 180);
// radians is now 0.52359.
var sinOf30degrees = sin(radians);
// sin 30° = 0.5
assert((sinOf30degrees - 0.5).abs() < 0.01);

Maximum and minimum

The Math library provides max() and min() methods:

assert(max(1, 1000) == 1000);
assert(min(1, -1000) == -1000);

Math constants

Find your favorite constants—pi, e, and more—in the Math library:

// See the Math library for additional constants.
print(e); // 2.718281828459045
print(pi); // 3.141592653589793
print(sqrt2); // 1.4142135623730951

Random numbers

Generate random numbers with the Random class. You can optionally provide a seed to the Random constructor.

var random = Random();
random.nextDouble(); // Between 0.0 and 1.0: [0, 1)
random.nextInt(10); // Between 0 and 9.

You can even generate random booleans:

var random = Random();
random.nextBool(); // true or false