Math

`Math.fround`

Returns the nearest 32-bit single precision float representation of a number

Syntax

JavaScript

Math.fround(doubleFloat)

Parameters

Parameter	Type	Description
doubleFloat	number	A number

Return Value

The nearest 32-bit single precision float

Examples

Basic Usage

console.log(Math.fround(5.5)); // 5.5
console.log(Math.fround(5.05)); // 5.050000190734863

Practical Example

console.log(Math.fround(1.337)); // 1.3370000123977661
console.log(Math.fround(NaN)); // NaN

Advanced Usage

const precise = 0.1 + 0.2;
const f32 = Math.fround(precise);
console.log(precise); // 0.30000000000000004
console.log(f32); // 0.30000001192092896

Understanding Math.fround

The Math.fround method in JavaScript returns the nearest 32-bit single precision float representation of a number. It belongs to the Math object and is one of the most widely used methods for working with math values in modern JavaScript and TypeScript applications.

The method signature is Math.fround(doubleFloat). It accepts 1 parameter: doubleFloat. When called, it returns the nearest 32-bit single precision float. Understanding when and how to use fround() helps you write more expressive, readable code.

Common use cases for Math.fround include data transformation, input validation, API response processing, and building reusable utility functions. It works well alongside related methods like math-clz32, math-imul, number-tofixed, enabling you to chain operations together for complex data manipulation pipelines.

Browser support for Math.fround is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. It is also fully supported in Node.js and Deno. For older environments, transpilation with Babel or a polyfill may be needed.