Number to Words

Introduction

Converts Numbers (including decimal points) into words. It also converts the numbers into words for currency.

Installation

npm install to-words --save

Usage

Importing

const { ToWords } = require('to-words');

OR

import { ToWords } from 'to-words';

Config Options

const toWords = new ToWords({
  localeCode: 'en-IN',
  converterOptions: {
    currency: true,
    ignoreDecimal: false,
    ignoreZeroCurrency: false,
  }
});

Options can be set at instance level, or along with individual call to convert method.

const toWords = new ToWords();

let words = toWords.convert(123);
// words = One Hundred Twenty Three

words = toWords.convert(123.45);
// words = One Hundred Twenty Three Point Fourty Five

words = toWords.convert(123.045);
// words = One Hundred Twenty Three Point Zero Four Five

Note: When fractional part starts with zero, the digits after decimal points are converted into respective numbers individually

To convert to currency

const toWords = new ToWords();

let words = toWords.convert(452, { currency: true });
// words = Four Hundred Fifty Two Rupees Only

words = toWords.convert(452.36, { currency: true });
// words = Four Hundred Fifty Two Rupees And Thirty Six Paise Only

To discard fractional unit

const toWords = new ToWords();

let words = toWords.convert(452.36, { currency: true, ignoreDecimal: true });
// words = Four Hundred Fifty Two Rupees Only

To ignore major currency number when it's zero

const toWords = new ToWords();

let words = toWords.convert(0.572, { currency: true, ignoreZeroCurrency: true });
// words = Five Hundred Seventy Two Paise Only

Options

Option	Type	Default	Description
localeCode	string	'en-IN'	Locale code for selecting i18n.
currency	boolean	false	Whether the number to be converted into words written as currency. Note: When currency:true, number will be rounded off to two decimals before converting to words
ignoreDecimal	boolean	false	Whether to ignore fractional unit of number while converting into words.
ignoreZeroCurrency	boolean	false	Whether to ignore zero currency value while converting into words.

Supported Locale

Country	Language	Locale
India	English	en-IN (default)
Myanmar	English	en-MM
Mauritius	English	en-MU
USA	English	en-US
Iran	Persian	fa-IR

Inspiration for core logic

https://stackoverflow.com/a/46221860