decimal.js

decimal.js is a JavaScript library for arbitrary-precision decimal and non-decimal arithmetic operations. It solves the floating-point precision problems inherent in JavaScript's native number handling, which can produce unexpected results in financial and scientific calculations. The library supports operations on numbers with hundreds or thousands of significant digits with configurable precision and rounding modes. decimal.js provides methods for arithmetic operations, comparison, rounding, and mathematical functions like logarithms and trigonometry. It's commonly used in financial applications, cryptocurrency platforms, and scientific computing where exact decimal calculations are critical. The library is lightweight, well-tested, and compatible with both browser and Node.js environments. Developers use decimal.js when working with monetary values, percentages, or any scenario where floating-point errors are unacceptable.