bangla_converter: Convert Bangla and English Numbers & Dates in Flutter

Building a Flutter app for Bangladeshi users? You will need to display numbers and dates in Bangla. The bangla_converter package makes this effortless with a simple, static API for bidirectional conversion between Bangla and English numerals and dates.

Why bangla_converter?

When developing apps for the Bangladeshi market, localization is critical. Users expect to see numbers like ০১৭৩৩ instead of 01733, and dates in the Bangla calendar format. Manually handling these conversions is error-prone and tedious. This package solves that with a clean, well-tested API.

Installation

Add the package to your pubspec.yaml:

dependencies:
  bangla_converter: ^2.0.0

Then run:

flutter pub get

Converting Numbers

English to Bangla

Use BanglaConverter.engToBan() to convert English digits to Bangla. It works with any data type — strings, integers, doubles — and preserves non-numeric characters.

import 'package:bangla_converter/bangla_converter.dart';

// Convert a phone number
String banglaPhone = BanglaConverter.engToBan("01733-452678");
// Output: "০১৭৩৩-৪৫২৬৭৮"

// Convert an integer
String banglaNumber = BanglaConverter.engToBan(12345);
// Output: "১২৩৪৫"

// Non-numeric characters are preserved
String mixed = BanglaConverter.engToBan("Price: 500 BDT");
// Output: "Price: ৫০০ BDT"

Bangla to English

The reverse conversion works the same way with BanglaConverter.banToEng():

String englishPhone = BanglaConverter.banToEng("০১৭৩৩-৪৫২৬৭৮");
// Output: "01733-452678"

String englishNumber = BanglaConverter.banToEng("১২৩৪৫");
// Output: "12345"

Converting Dates

English Date to Bangla Date

The banglaDate() method converts English (Gregorian) dates to the Bangla calendar. You can use it in three ways:

// Get today's date in Bangla
var today = BanglaConverter.banglaDate(isToday: true);
print(today?.date);    // "২৪শে" (day with Bangla suffix)
print(today?.month);   // "চৈত্র" (Bangla month name)
print(today?.year);    // "১৪৩১" (Bangla year in Bangla digits)
print(today?.weekDay); // "সোমবার" (Bangla weekday)

// Convert a specific DateTime
var specific = BanglaConverter.banglaDate(
  englishDate: DateTime(2025, 1, 15),
);

// Convert from individual components
var custom = BanglaConverter.banglaDate(
  day: 15,
  month: 1,
  year: 2025,
);

The returned BanglaDateReturn object includes:

• date — Day number with the correct Bangla suffix (লা, রা, or শে)
• month — Bangla month name (বৈশাখ, জ্যৈষ্ঠ, etc.)
• monthDigit — Month number as a string
• year — Bangla year in Bangla digits
• weekDay — Bangla weekday name
• yearDescription — Always "বঙ্গাব্দ"

Bangla Date to English Date

Convert back to a Gregorian DateTime using englishDate():

DateTime englishDate = BanglaConverter.englishDate(
  banglaDay: 1,
  banglaMonth: 1,
  banglaYear: 1432,
);
// Returns: DateTime object for the corresponding English date

Real-World Use Case

Here is a practical example showing Bangla dates in a Flutter widget:

class BanglaDateWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final banglaDate = BanglaConverter.banglaDate(isToday: true);

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          '${banglaDate?.date} ${banglaDate?.month}, ${banglaDate?.year} ${banglaDate?.yearDescription}',
          style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
        ),
        Text(
          banglaDate?.weekDay ?? '',
          style: TextStyle(fontSize: 14, color: Colors.grey),
        ),
      ],
    );
  }
}

Platform Support

The package works across all Flutter platforms: Android, iOS, Linux, macOS, Web, and Windows.

Summary

The bangla_converter package provides a straightforward API for Bangla-English number and date conversion. Whether you are building a banking app, an e-commerce platform, or any app targeting Bangladeshi users, this package handles the localization heavy lifting so you can focus on your core features.

Check it out on pub.dev or explore the source on GitHub.