The Intl.NumberFormat
object is a constructor for objects that enable language sensitive number formatting.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Constructor
Intl.NumberFormat()
- Creates a new
NumberFormat
object.
Static methods
Intl.NumberFormat.supportedLocalesOf()
- Returns an array containing those of the provided locales that are supported without having to fall back to the runtime's default locale.
Instance methods
Intl.NumberFormat.prototype.format()
- Getter function that formats a number according to the locale and formatting options of this
NumberFormat
object. Intl.NumberFormat.prototype.formatToParts()
- Returns an
Array
of objects representing the number string in parts that can be used for custom locale-aware formatting. Intl.NumberFormat.prototype.resolvedOptions()
- Returns a new object with properties reflecting the locale and collation options computed during initialization of the object.
Examples
Basic usage
In basic use without specifying a locale, a formatted string in the default locale and with default options is returned.
var number = 3500; console.log(new Intl.NumberFormat().format(number)); // β '3,500' if in US English locale
Using locales
This example shows some of the variations in localized number formats. In order to get the format of the language used in the user interface of your application, make sure to specify that language (and possibly some fallback languages) using the locales
argument:
var number = 123456.789; // German uses comma as decimal separator and period for thousands console.log(new Intl.NumberFormat('de-DE').format(number)); // β 123.456,789 // Arabic in most Arabic speaking countries uses real Arabic digits console.log(new Intl.NumberFormat('ar-EG').format(number)); // β Ω‘Ω’Ω£Ω€Ω₯Ω¦Ω«Ω§Ω¨Ω© // India uses thousands/lakh/crore separators console.log(new Intl.NumberFormat('en-IN').format(number)); // β 1,23,456.789 // the nu extension key requests a numbering system, e.g. Chinese decimal console.log(new Intl.NumberFormat('zh-Hans-CN-u-nu-hanidec').format(number)); // β δΈδΊδΈ,εδΊε .δΈε «δΉ // when requesting a language that may not be supported, such as // Balinese, include a fallback language, in this case Indonesian console.log(new Intl.NumberFormat(['ban', 'id']).format(number)); // β 123.456,789
Using options
The results can be customized using the options
argument:
var number = 123456.789; // request a currency format console.log(new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(number)); // β 123.456,79 β¬ // the Japanese yen doesn't use a minor unit console.log(new Intl.NumberFormat('ja-JP', { style: 'currency', currency: 'JPY' }).format(number)); // β οΏ₯123,457 // limit to three significant digits console.log(new Intl.NumberFormat('en-IN', { maximumSignificantDigits: 3 }).format(number)); // β 1,23,000
Using style and unit
console.log(new Intl.NumberFormat("pt-PT", { style: 'unit', unit: "mile-per-hour" }).format(50)); // β 50 mi/h console.log((16).toLocaleString('en-GB', { style: "unit", unit: "liter", unitDisplay: "long" })); // β 16 litres
Specifications
Specification |
---|
ECMAScript Internationalization API (ECMA-402) The definition of 'Intl.NumberFormat' in that specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NumberFormat | Chrome Full support 24 | Edge Full support 12 | Firefox Full support 29 | IE Full support 11 | Opera Full support 15 | Safari Full support 10 | WebView Android Full support 4.4 | Chrome Android Full support 25 | Firefox Android Full support 56 | Opera Android Full support 14 | Safari iOS Full support 10 | Samsung Internet Android Full support 1.5 | nodejs
Full support
0.12
|
NumberFormat() constructor | Chrome Full support 24 | Edge Full support 12 | Firefox Full support 29 | IE Full support 11 | Opera Full support 15 | Safari Full support 10 | WebView Android Full support 4.4 | Chrome Android Full support 25 | Firefox Android Full support 56 | Opera Android Full support 14 | Safari iOS Full support 10 | Samsung Internet Android Full support 1.5 | nodejs
Full support
13.0.0
|
format | Chrome Full support 24 | Edge
Full support
12
| Firefox Full support 29 | IE
Full support
11
| Opera Full support 15 | Safari Full support 10 | WebView Android Full support 4.4 | Chrome Android Full support 25 | Firefox Android Full support 56 | Opera Android Full support 14 | Safari iOS Full support 10 | Samsung Internet Android Full support 1.5 | nodejs
Full support
0.12
|
formatToParts | Chrome Full support 64 | Edge Full support 12 | Firefox Full support 58 | IE No support No | Opera Full support 51 | Safari Full support 13 | WebView Android Full support 64 | Chrome Android Full support 64 | Firefox Android Full support 58 | Opera Android Full support 47 | Safari iOS Full support 13 | Samsung Internet Android Full support 9.0 | nodejs
Full support
10.0.0
|
resolvedOptions | Chrome Full support 24 | Edge Full support 12 | Firefox Full support 29 | IE Full support 11 | Opera Full support 15 | Safari Full support 10 | WebView Android Full support 4.4 | Chrome Android Full support 25 | Firefox Android Full support 56 | Opera Android Full support 14 | Safari iOS Full support 10 | Samsung Internet Android Full support 1.5 | nodejs
Full support
0.12
|
supportedLocalesOf | Chrome Full support 24 | Edge Full support 12 | Firefox Full support 29 | IE Full support 11 | Opera Full support 15 | Safari Full support 10 | WebView Android Full support 4.4 | Chrome Android Full support 25 | Firefox Android Full support 56 | Opera Android Full support 14 | Safari iOS Full support 10 | Samsung Internet Android Full support 1.5 | nodejs
Full support
13.0.0
|
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- See implementation notes.
- See implementation notes.