How to display two decimal values in Dart/Flutter?

Question

I have a simple program below. The output is 64.5 it only shows one decimal value but I wanted it to display the last two decimal values.

Ex. Your change is 64.50 USD

How can I achieve this in dart/flutter?

void main() {

  double money = 80.00;
  double price = 15.50;

  double change = money - price;

  print('Your change is $change USD');
}

BTW, I would highly recommend that you do not store currency as `double`. You'd be much better off storing the number of cents (or whatever the smallest indivisible unit of currency is) as `int` and then printing it in a friendlier format at the end. If you use `double`, you'll find that $0.10 + $0.10 + $0.10 is not $0.30 due to [floating point error](https://stackoverflow.com/questions/588004/is-floating-point-math-broken). — jamesdlin, Apr 25 '20 at 02:04

score 3 · Accepted Answer · answered Apr 25 '20 at 00:32

3

Try This:

void main() {

  double money = 80.00;
  double price = 15.50;

  double change = money - price;

  print('Your change is ${change.toStringAsFixed(2)} USD');
}

check here

answered Apr 25 '20 at 00:32

Sandeep Sharma

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score 1 · Answer 2 · answered Apr 25 '20 at 00:37

1

I would use the intl package from google

var formatter = new NumberFormat.currency(locale: "en_US", symbol: "$");
print('Your change is {formatter.format(change)} USD');

answered Apr 25 '20 at 00:37

dave

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How to display two decimal values in Dart/Flutter?

2 Answers2