Fraction.js — Precision Rational Arithmetic | Open Awesome

for browsers, or use npm/yarn for Node.js: 'npm install fraction.js' and import with require or ES6 syntax as shown in the README."}},{"@type":"Question","name":"What are the browser requirements for Fraction.js?","acceptedAnswer":{"@type":"Answer","text":"It requires BigInt support, available in modern browsers like Chrome, Firefox, and Edge, but not in older ones like Internet Explorer. Check compatibility tables if targeting legacy environments."}},{"@type":"Question","name":"Can Fraction.js handle negative modulo operations?","acceptedAnswer":{"@type":"Answer","text":"Yes, it provides mathematically correct modulo for negative congruences, which standard implementations often get wrong. The README includes a workaround using mod().add(b).mod(b) for exact results."}}]}

Fraction.js

MITJavaScript

A JavaScript library for precise rational number arithmetic using BigInt, avoiding floating-point inaccuracies.

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What is Fraction.js?

Fraction.js is a JavaScript library that provides a robust implementation of rational numbers (ℚ). It solves the precision problems inherent in floating-point arithmetic by representing numbers as exact fractions with BigInt numerators and denominators, making it ideal for applications requiring high mathematical accuracy.

Target Audience

Developers working on applications that require exact mathematical precision, such as financial calculations, probability simulations, educational math tools, or scientific computing where floating-point errors are unacceptable.

Value Proposition

It prioritizes precision and mathematical correctness over speed, using BigInt to ensure calculations remain exact and reliable, serving as a foundational library for other mathematical tools. It outperforms typical fmod() implementations and handles repeating decimals and complex operations with perfect accuracy.

Overview

The RAW rational numbers library written in JavaScript

Use Cases

Best For

Performing exact rational arithmetic (addition, subtraction, multiplication, division, modulo) without floating-point errors.

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Fraction.js

What is Fraction.js?

Overview

Use Cases

Best For

Related Projects

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Pros & Cons

Pros

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