🐖💼🤵Piggy-Bank-Compound-Interest-Calculator

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The Compound Interest Calculator is a modern, responsive web application that helps users visualize the long-term growth of their savings and investments. Built using Python (Flask) for the backend and HTML/CSS for the frontend, this project provides a simple yet powerful tool for calculating compound interest based on user-provided financial inputs.

🚀 Features

💰 Instant Calculations: Get real-time compound interest results using standard inputs like principal, interest rate, duration, and compounding frequency.

📅 Flexible Frequency Options: Choose from annual, monthly, weekly, daily, or custom compounding intervals via a user-friendly dropdown.

🧮 Clean, Modern Interface: Responsive design with smooth animations and intuitive form handling.

⚠️ Error Handling: Graceful feedback for invalid or missing inputs, ensuring a robust user experience.

🎨 Custom Styling: Includes a polished stylesheet with a vibrant color palette and interactive elements.

🔧 Tech Stack

1. Backend: Python + Flask

2. Frontend: HTML5, CSS3 (with Google Fonts & optional Font Awesome)

3. Hosting: Suitable for deployment on platforms like Heroku, Render, or any Flask-compatible environment

📝 How to Use

1. Clone the repository: git clone https://github.com/yourusername/compound-interest-calculator.git cd compound-interest-calculator

2. (Optional) Set up a virtual environment: python -m venv venv source venv/bin/activate # or venv\Scripts\activate on Windows

3. Install dependencies: pip install -r requirements.txt

4. Run the app: python app.py

5. App link: http://127.0.0.1:5000

📈 Formula Used

The calculator uses the standard compound interest formula:

  A = P(1+r/n)^(nt)

Where:

A = final amount

P = principal amount

r = annual interest rate (decimal)

n = number of compounding periods per year

t = number of years

📂 Project Structure

compound-interest-calculator

1. static -> style.css # CSS styles
2. templates -> index.html # HTML frontend
3. app.py # Flask app
4. requirements.txt # Python dependencies
5. README.md # Project documentation

🪧 Demonstration

PiggyBank.CIC.mp4

🌟 Future Improvements

📊 Add interactive charts using Chart.js or Plotly

🌒 Add dark mode toggle

📱 Improve mobile responsiveness

🔐 Add session storage for saving results

🪪 LICENSE

This project is licensed under MIT License.

🧑‍💻 Author

Created by Alen Francis Joseph (@AFJGitHubDev24) — passionate about building tools that are helpful for the mankind.

Contact

1. Email ID: alenfrancis957@gmail.com
2. Phone number: +91 9605197307
3. GitHub account username: AFJGitHubDev24
4. Instagram: https://www.instagram.com/fj.alen/
5. LinkedIn: www.linkedin.com/in/alen-francis-joseph-185822277
6. Facebook: https://www.facebook.com/profile.php?id=100089704713351