The Intl.NumberFormat
object enables language-sensitive number formatting.
Intl.NumberFormat
Try it
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
Intl.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.formatRange()
-
Getter function that formats a range of numbers according to the locale and formatting options of the
Intl.NumberFormat
object from which the method is called. -
Intl.NumberFormat.prototype.formatRangeToParts()
-
Returns an
Array
of objects representing the range of number strings 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)); // → '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)); // → 123.456,789 // Arabic in most Arabic speaking countries uses real Arabic digits console.log(new Intl.NumberFormat('ar-EG').format(number)); // → ١٢٣٤٥٦٫٧٨٩ // India uses thousands/lakh/crore separators console.log(new Intl.NumberFormat('en-IN').format(number)); // → 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)); // → 一二三,四五六.七八九 // 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)); // → 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)); // → 123.456,79 € // the Japanese yen doesn't use a minor unit console.log(new Intl.NumberFormat('ja-JP', { style: 'currency', currency: 'JPY' }).format(number)); // → ¥123,457 // limit to three significant digits console.log(new Intl.NumberFormat('en-IN', { maximumSignificantDigits: 3 }).format(number)); // → 1,23,000
Using style and unit
console.log(new Intl.NumberFormat('pt-PT', { style: 'unit', unit: 'kilometer-per-hour' }).format(50)); // → 50 km/h console.log((16).toLocaleString('en-GB', { style: 'unit', unit: 'liter', unitDisplay: 'long' })); // → 16 litres
Specifications
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
NumberFormat |
24
|
12
|
29
|
11
|
15
|
10
|
4.4
|
25
|
56
|
14
|
10
|
1.5
|
1.8
|
0.12.0
Before version 13.0.0, only the locale data for
en-US is available by default. See
the NumberFormat() constructor for more details.
|
NumberFormat |
24
|
12
|
29
|
11
|
15
|
10
|
4.4
|
25
|
56
|
14
|
10
|
1.5
|
1.8
|
13.0.0
0.12.0
Before version 13.0.0, only the locale data for
en-US is available by default. When other locales are specified, the
NumberFormat instance silently falls back to
en-US . To make full ICU (locale) data available before version 13, see
Node.js documentation on the --with-intl option and how to provide the data.
|
format |
24
|
12
Before Edge 18, numbers are rounded to 15 decimal digits. For example,
new Intl.NumberFormat('en-US').format(1000000000000005) returns
"1,000,000,000,000,010" .
|
29
|
11
In Internet Explorer 11, numbers are rounded to 15 decimal digits. For example,
new Intl.NumberFormat('en-US').format(1000000000000005) returns
"1,000,000,000,000,010" .
|
15
|
10
|
4.4
|
25
|
56
|
14
|
10
|
1.5
|
1.8
|
0.12.0
Before version 13.0.0, only the locale data for
en-US is available by default. See
the NumberFormat() constructor for more details.
|
formatRange |
No
|
No
|
No
|
No
|
No
|
15.4
|
No
|
No
|
No
|
No
|
15.4
|
No
|
No
|
No
|
formatRangeToParts |
No
|
No
|
No
|
No
|
No
|
15.4
|
No
|
No
|
No
|
No
|
15.4
|
No
|
No
|
No
|
formatToParts |
64
|
12
|
58
|
No
|
51
|
13
|
64
|
64
|
58
|
47
|
13
|
9.0
|
1.8
|
10.0.0
Before version 13.0.0, only the locale data for
en-US is available by default. See
the NumberFormat() constructor for more details.
|
resolvedOptions |
24
|
12
|
29
|
11
|
15
|
10
|
4.4
|
25
|
56
|
14
|
10
|
1.5
|
1.8
|
0.12.0
Before version 13.0.0, only the locale data for
en-US is available by default. See
the NumberFormat() constructor for more details.
|
supportedLocalesOf |
24
|
12
|
29
|
11
|
15
|
10
|
4.4
|
25
|
56
|
14
|
10
|
1.5
|
1.8
|
13.0.0
0.12.0
Before version 13.0.0, only the locale data for
en-US is available by default. To make full ICU (locale) data available before version 13, see
Node.js documentation on the --with-intl option and how to provide the data.
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat