💱Universal Currency Converter

A simple Flutter app that converts between different world currencies using live exchange rates.

Built with Flutter’s Material UI, HTTP networking, and dropdown menus for smooth user experience.

---

✨ Features

• 🔄 Convert between 100+ currencies (USD, INR, EUR, JPY, and many more)

• ⌨️ Clean input field with validation

• 📱 Modern Material UI design with dropdown menus

• 🌐 Live rates fetched from ExchangeRate API

• 🎨 Dark-themed interface

---

📸 Screenshots

---

🛠️ Tech Stack

• Flutter (Dart)

• HTTP package for API requests

• ExchangeRate API for live rates

---

⚙️ Setup & Installation

1. Clone the repo

git clone https://github.com/harsh-26626/congenial-canival.git

cd congenial-canival

2. Change branch to master

git checkout master

3. Install dependencies

flutter pub get

4. Get an API key

• Follow these steps to get your API key:
  • Sign up at ExchangeRate API
  • Copy your API key

5. Run the app

• Option A: With .env (local development)
  1. Create a .env file in the root:

     API_KEY=your_api_key_here
     

  2. Load it using flutter_dotenv
• Option B: With --dart-define (production / builds)
  1. Pass the key at runtime:

     flutter run --dart-define=API_KEY=your_api_key_here
     

---

📂 Project Structure

lib/
 └── currency_converter.dart   # Main app widget
pubspec.yaml                  # Dependencies & metadata
.env                          # API key (local only, don’t commit!)

---