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< @angular/commonAngular/docs/8/api/common/percentpipe



Transforms a number to a percentage string, formatted according to locale rules that determine group sizing and separator, decimal-point character, and other locale-specific configurations.

Template:Value expression


Input value

value any The number to be formatted as a percentage.


digitsInfo string

Decimal representation options, specified by a string in the following format: {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}.

  • minIntegerDigits: The minimum number of integer digits before the decimal point. Default is 1.
  • minFractionDigits: The minimum number of digits after the decimal point. Default is 0.
  • maxFractionDigits: The maximum number of digits after the decimal point. Default is 0.

Optional. Default is undefined.

locale string

A locale code for the locale format rules to use. When not supplied, uses the value of LOCALE_ID, which is en-US by default. See Setting your app locale.

Optional. Default is undefined.

See also

  • formatPercent()

Usage notes

The following code shows how the pipe transforms numbers into text strings, according to various format specifications, where the caller's default locale is en-US.

  selector: 'percent-pipe',
  template: `<div>
    <!--output '26%'-->
    <p>A: {{a | percent}}</p>

    <!--output '0,134.950%'-->
    <p>B: {{b | percent:'4.3-5'}}</p>

    <!--output '0 134,950 %'-->
    <p>B: {{b | percent:'4.3-5':'fr'}}</p>
export class PercentPipeComponent {
  a: number = 0.259;
  b: number = 1.3495;

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