compact_number_formatter

A high-performance, zero-dependency Dart utility to transform large numbers into human-readable compact formats. Supports both the Indian Numbering System (Lakh/Crore) and the International System (Million/Billion/Trillion) with currency formatting, ordinals, and global configuration.

📸 Screenshots

Indian System	International System	Currency Format

Rounding & Truncate	Negative Numbers	Prefixes

🚀 Key Features

• 🇮🇳 Indian System: Smart conversion to Lakhs (L) and Crores (Cr).
• 🌍 International System: Standard Millions (M), Billions (B), and Trillions (T).
• 💰 Currency Formatting: Built-in comma separation (e.g., 1,00,000 or 100,000) with optional symbols (₹, $).
• 👥 Plurality Support: Automatically handles "Lakh" vs "Lakhs" and "Crore" vs "Crores".
• 🏅 Ordinals: Built-in extension for ordinal suffixes (1st, 2nd, 3rd).
• ➖ Negative Numbers: Full support for negative values.
• 🔢 Round Off Control: Truncates by default. Pass roundOff: true to round.
• 💲 Symbol Prefix: Optional prefix symbol (e.g., ₹, $) on compact numbers.
• ⚙️ Global Config: Set defaults once with CompactNumberConfig.set() — no need to repeat params on every call.
• ⚡ Pure Dart: No Flutter dependency. Use it in Flutter, AngularDart, or Server-side Dart.

📖 Usage

Compact Numbers

The .toCompact() extension works on any num (int or double).

import 'package:compact_number_formatter/compact_number_formatter.dart';

// Indian Short (Default)
print(150000.toCompact()); // "1.5 L"

// Indian Long with Plurality
print(200000.toCompact(format: CompactFormat.long)); // "2.0 Lakhs"
print(10000000.toCompact(format: CompactFormat.long)); // "1.0 Crore"

// International
print(1200000.toCompact(system: CompactSystem.international)); // "1.2 M"

// Negative Numbers
print((-150000).toCompact()); // "-1.5 L"
print((-5.02).toCompact(decimal: 2)); // "-5.02"

// With Symbol Prefix
print(150000.toCompact(symbol: '₹')); // "₹1.5 L"
print(1200000.toCompact(symbol: '\$', system: CompactSystem.international)); // "\$1.2 M"

// Truncation (default) vs Rounding
print(1590.toCompact(decimal: 1));                  // "1.5 K" (truncated)
print(1590.toCompact(decimal: 1, roundOff: true));  // "1.6 K" (rounded)

Global Configuration

Set defaults once instead of passing parameters every time:

// Set once in main() or app init
CompactNumberConfig.set(
  system: CompactSystem.international,
  symbol: '\$',
  compactDecimal: 2,
  currencyDecimal: 0,
);

// All calls now use those defaults
print(1200000.toCompact());           // "\$1.20 M"
print(5000.toCompact());              // "\$5.00 K"
print(1234567.toCurrencyFormat());    // "\$1,234,567.00"

// Per-call params still override the global config
print(150000.toCompact(symbol: '₹')); // "₹1.50 L"

// Reset all back to library defaults
CompactNumberConfig.reset();
print(150000.toCompact()); // "1.5 L"

Ordinal Numbers

print(1.toOrdinal());  // "1st"
print(22.toOrdinal()); // "22nd"

Currency / Comma Formatting

// Indian System Commas (Default)
print(1234567.toCurrencyFormat()); // "12,34,567.00"

// International System Commas
print(1234567.toCurrencyFormat(system: CompactSystem.international, decimal: 0)); // "1,234,567"

// With Currency Symbol
print(1500000.toCurrencyFormat(decimal: 0, symbol: '₹ ')); // "₹ 15,00,000"

🛠 Configuration