Number To Words

Contains some util methods for converting numbers into words, ordinal words and ordinal numbers.

Install

npm install number-to-words-en

API

toOrdinal(number)

Converts an integer into a string with an ordinal postfix. If number is decimal, the decimals will be removed.

var converter = require('number-to-words-en');
converter.toOrdinal(21); // => “21st”

toWords(number, options)

Converts an integer into words. If number is decimal, the decimals will be removed.

var converter = require('number-to-words-en');
converter.toWords(13); // => “thirteen”

// Decimal numbers:
converter.toWords(2.9); // => “two”

// Negative numbers:
converter.toWords(-3); // => “minus three”

// Large numbers:
converter.toWords(9007199254740992); // => “nine quadrillion, seven trillion, one hundred ninety-nine billion, two hundred fifty-four million, seven hundred forty thousand, nine hundred ninety-two”

toWordsOrdinal(number, options)

Converts a number into ordinal words. If number is decimal, the decimals will be removed.

var converter = require('number-to-words-en');
converter.toWordsOrdinal(21); // => “twenty-first”

Options

An object to specify alternative behavior for conversion of numbers to words. Available options are:

{
    useCommas: true, // a boolean value indicating whether the spelled numbers should include commas (default is true)
    negativePrefix: 'minus' // the string to use at the beginning of a negative number (default is 'minus')
}

For example:

var converter = require('number-to-words-en');
converter.toWords(-1234, { useCommas: false, negativePrefix: 'negative' }); // => “negative one thousand two hundred thirty-four”

Contributions, Comments and Bugs

Contributions, comments and/or bug reports are much appreciated. Open a pull request or add comments on the issues page. Thanks!

Upcoming v2.0

See roadmap for details.

Change Log

Version 1.2.5

• addition of options object. If second argument is not an object, it still behaves like former (deprecated) asOrdinal parameter.

Version 1.2.4

• Bug fix in toOrdinal. When passed -11, -12 and -13 it returned an incorrect suffix (#15). Thanks to @dmrzn.
• toOrdinal and toWords now throws a more precise error when passed an unsafe number (#13). Thanks to @adrianomelo.

Version 1.2.3

• Bug fix in isFinite for Phantom and IE (#10). Thanks to @jeremiahrhall.

Version 1.2.2

• Bug fix in toOrdinal. Input 11, 12, and 13 now yields the correct suffix (#8). Thanks to @pilyugin.

Version 1.2.1

• Bower package

Version 1.2.0

• Bundles are now available for browsers (./numberToWords.js and ./numberToWords.min.js). They export a global numberToWords variable.
• Made unit tests runnable in browser. To run the unit tests in the browser, start a local server and visit localhost/spec with a browser.
• toOrdinal, toWords and toWordsOrdinal now also allow string values as input (replaced Math.floor with parseInt).

1.1.0

• New methods toOrdinal and toWordsOrdinal
• Deprecated toWords second optional asOrdinal parameter, use toWordsOrdinal()-method instead
• toWords now converts any decimal input to an integer (with Math.floor)
• Bug fixed returning “zeroth” instead of “zero” when converting a number word into its ordinal

1.0.1

• Minor package tweaks

1.0.0

• Initial release