Compound-Interest-BTC-Calculator v2 (including ETF)

A minimal BTC compound interest calculator showing how reinvested profits can grow over time.

4% Rule

This project also demonstrates the concept of the “4% Rule,” a popular guideline in financial planning. It suggests withdrawing a maximum of 4% of your portfolio annually to ensure long-term sustainability. While originally applied to traditional portfolios, it can also be adapted to crypto investments to plan withdrawals responsibly.

Features

• Quick calculation of compound interest for Bitcoin or ETF or both.
• Simple UI for adjusting principal, annual interest rate, and time frame
• Real-time results and easy-to-read charts

Installation

1. Clone this repository
2. Install dependencies:

   npm install

3. Start the development server:

   npm start

Usage

• Open your browser at http://localhost:3000
• Enter the values
• View the projected growth over time

Live Demo

Try it out here

Contributing

Feel free to submit issues or pull requests. Any help to improve this project is welcome!