The Power of Compound Interest

What is One Copper Penny?

One Copper Penny is an interactive web project that demonstrates the incredible power of compound interest through a simple yet captivating concept: doubling a single penny every day for 30 days.

How It Works

Users start with just one penny ($0.01) and have the opportunity to double it each day by submitting a link. This simple action represents the concept of compound growth, where each day's gains build upon the previous day's total.

• Start with $0.01 on day 1
• Double your amount each day
• Watch your penny grow exponentially
• Reach millions by day 30

The Math Behind One Copper Penny

The growth in this project follows the exponential formula:

Where A is the final amount, and n is the number of days (0 to 30).

The Surprising Result

By day 30, that single penny will have grown to an astounding:

$5,368,709.12

This mind-boggling growth illustrates why compound interest is often called the "eighth wonder of the world."

Educational Purpose

One Copper Penny serves as an educational tool to:

• Visualize the power of compound growth
• Understand the importance of consistent, long-term investing
• Demonstrate how small, regular contributions can lead to significant results
• Encourage financial literacy and smart money management