Flutter/Dart - Format double to String with thousand separators AND digits after decimal point

Question

I am trying to achieve a formatted String from a double variable, which will include thousand separators (",") AND will include always 2 digits after the decimal point (even if it's zero).

I've succeeded to achieve both of them separately, but couldn't achieve them combined together.

Example for what I'm looking to achieve:

100 => "100.00"
100.5 => "100.50"
1000 = "1,000.00"
1000.5 = > "1,000.50"
1000000 => "1,000,000.00"
1000000.53 => 1,000,000.53
etc...

I've tried to achieve this using:

NumberFormat.decimalPattern('en').format(
    double.parse(
        myDoubleVar.toStringAsFixed(2),
    ),
);

But it doesn't give my the decimal points if they are zero.

Does anyone know how can I achieve this?

Thank you

@F.S07 can you try with my answer?

Jahidul Islam
– Jahidul Islam

2021-08-24 11:27:12 +00:00
Commented Aug 24, 2021 at 11:27 — Jahidul Islam
– Jahidul Islam, Commented Aug 24, 2021 at 11:27

Jahidul Islam · Accepted Answer · 2021-08-24 10:24:21Z

13

Try with this

double amount = 1000000;
NumberFormat numberFormat = NumberFormat("#,##0.00", "en_US");

print('${(numberFormat.format(amount))}');

output: 1,000,000.00

edited Aug 24, 2021 at 10:24

answered Aug 24, 2021 at 10:11

Jahidul Islam

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2 Comments

KWC Over a year ago

-wrong comment-

AmirHossein Over a year ago

it rounds double to int which is not usable for crypto price

Rohit Chaurasiya · Accepted Answer · 2021-08-24 10:02:30Z

2

Here I have used like this.

void main() {
  
  num balance = 120000;
    print("\$${balance.toStringAsFixed(2).replaceAllMapped(RegExp(r'(\d{1,3})(?=(\d{3})+(?!\d))'), (Match m) => "${m[1]},") }");
}

answered Aug 24, 2021 at 10:02

Rohit Chaurasiya

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