bangla_utilities

A pure-Dart utility library for converting Gregorian dates to the Bangla calendar (বাংলা পঞ্জিকা), formatting them, and rendering numbers as Bangla (Bengali) numerals.

No Flutter dependency — works in any Dart environment (Flutter, server, CLI, web).

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Features

• 📅 Bangla date — day, month (name + numeral), year, weekday, season
• 🗓️ Date formatting — pattern-based formatting with Bangla numeral tokens
• 🔢 Bangla numerals — convert any int or digit-containing String
• 🌿 Leap-year detection (Gregorian)
• ✅ Zero external runtime dependencies

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Installation

dependencies:
  bangla_utilities: ^2.0.2

dart pub get

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Usage

BanglaDate

import 'package:bangla_utilities/bangla_utilities.dart';

// Today's date
final today = BanglaDate.today();
print(today.date);      // e.g. ১৯-১১-১৪৩১
print(today.monthName); // e.g. ফাল্গুন
print(today.weekday);   // e.g. বুধবার
print(today.season);    // e.g. বসন্ত
print(today.yearInt);   // e.g. 1431  (raw int)

// From a DateTime
final d = BanglaDate.fromDateTime(DateTime(2020, 5, 31));
print(d.date);      // ১৭-২-১৪২৭
print(d.monthName); // জ্যৈষ্ঠ
print(d.weekday);   // রবিবার

// From separate year / month / day components (all optional, default to today)
final d2 = BanglaDate.fromEnglishYearMonthDay(year: 2024, month: 4, day: 14);
print(d2.monthName); // বৈশাখ  (Pohela Boishakh)
print(d2.dayInt);    // 1

// From an ISO 8601 string
final d3 = BanglaDate.fromEnglishDate('2020-05-31');
print(d3.isLeapYear); // true

BanglaDate properties

Property	Type	Description	Example
day	String	Bangla numeral day	'১৭'
dayInt	int	Day as integer	17
month	String	Bangla numeral month (1-based)	'২'
monthInt	int	Month as integer (বৈশাখ=1 … পৌষ=9 … চৈত্র=12)	2
monthName	String	Bangla month name	'জ্যৈষ্ঠ'
year	String	Bangla numeral year	'১৪২৭'
yearInt	int	Year as integer	1427
weekday	String	Bangla weekday name	'রবিবার'
season	String	Bangla season name	'গ্রীষ্ম'
date	String	Formatted day-month-year	'১৭-২-১৪২৭'
isLeapYear	bool	Whether Gregorian year is a leap year	true

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BanglaDateFormatter

Format a BanglaDate using a pattern string with the following tokens:

Token	Description	Example
YYYY	Full Bangla year	১৪৩০
YY	Last 2 Bangla digits of year	৩০
MM	Zero-padded 2-digit Bangla month	০৯
M	Bangla month without leading zero	৯
DD	Zero-padded 2-digit Bangla day	০২
D	Bangla day without leading zero	২
d	Bangla weekday name	সোমবার
S	Bangla season name	শীত

import 'package:bangla_utilities/bangla_utilities.dart';

final date = BanglaDate.fromEnglishDate('2024-01-01');

const f1 = BanglaDateFormatter('DD/MM/YYYY');
print(f1.format(date)); // ১৮/০৯/১৪৩০

const f2 = BanglaDateFormatter('DD-MM-YY');
print(f2.format(date)); // ১৮-০৯-৩০

const f3 = BanglaDateFormatter('D/M/YYYY');
print(f3.format(date)); // ১৮/৯/১৪৩০

const f4 = BanglaDateFormatter('d, S');
print(f4.format(date)); // সোমবার, শীত

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BanglaNumber

import 'package:bangla_utilities/bangla_utilities.dart';

// From an int
final n = BanglaNumber.fromEnglish(1234);
print(n.value);        // ১২৩৪
print(n.englishValue); // 1234

// From an arbitrary string — non-digit characters are preserved
final s = BanglaNumber.fromString('2024-01-15');
print(s.value); // ২০২৪-০১-১৫

final price = BanglaNumber.fromString('Price: 42.5 BDT');
print(price.value); // Price: ৪২.৫ BDT

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Migration from v1.x

The old BanglaUtility static class was removed in v2.0.0. Replace usages as follows:

Old (v1.x)	New (v2.x)
BanglaUtility.getBanglaDate(...)	BanglaDate.fromEnglishYearMonthDay(...).date
BanglaUtility.getBanglaDay(...)	BanglaDate.fromEnglishYearMonthDay(...).day
BanglaUtility.getBanglaMonth(...)	BanglaDate.fromEnglishYearMonthDay(...).month
BanglaUtility.getBanglaMonthName(...)	BanglaDate.fromEnglishYearMonthDay(...).monthName
BanglaUtility.getBanglaYear(...)	BanglaDate.fromEnglishYearMonthDay(...).year
BanglaUtility.getBanglaWeekday(...)	BanglaDate.fromEnglishYearMonthDay(...).weekday
BanglaUtility.getBanglaSeason(...)	BanglaDate.fromEnglishYearMonthDay(...).season
BanglaUtility.isLeapYear(year: y)	BanglaDate.fromEnglishYearMonthDay(year: y).isLeapYear
BanglaUtility.englishToBanglaDigit(englishDigit: n)	BanglaNumber.fromEnglish(n).value

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License

MIT — see LICENSE.