How to format numbers as thousands separators in Dart

Question

I have to format numbers as thousands separators in dart. I have numbers like:

16987

13876

456786

and I want to format them as :

16,987

13,876 

4,56,786

Answer 1

You can use NumberFormat passing a custom format in ICU formatting pattern, take a look in NumberFormat.

import 'package:intl/intl.dart';

void main() {
  var formatter = NumberFormat('#,##,000');
  print(formatter.format(16987));
  print(formatter.format(13876));
  print(formatter.format(456786));
}

Output

16,987
13,876
4,56,786

Answer 2

I found NumberFormat class from intl package very useful as it provides different ways to format numbers.

By default the NumberFormat class format's number in million's using default American locale and we can format numbers in lakh using Indian locale(It can format number or currency according to any countries locale).NumberFormat.decimalPattern([String locale]).

import 'package:intl/intl.dart';   

void main() {
  NumberFormat numberFormat = NumberFormat.decimalPattern('hi');
  print(numberFormat.format(16987));
  print(numberFormat.format(13876));
  print(numberFormat.format(456786));
}

Output

16,987
13,876
4,56,786