Compound Interest Calculator: The Secret to Long-Term Wealth Building
Discover how compound interest works and use our calculator to project your investment growth over time.
The Power of Compound Interest
Albert Einstein allegedly called compound interest "the eighth wonder of the world." Here's why it's so powerful.
What is Compound Interest?
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods.
Formula: A = P(1 + r/n)^(nt)
Where:
- A = Final amount
- P = Principal (initial investment)
- r = Annual interest rate
- n = Number of times interest compounds per year
- t = Time in years
The Magic of Time
| Initial Investment | Years | 7% Return | Final Value |
|---|---|---|---|
| $10,000 | 10 | Compound | $19,672 |
| $10,000 | 20 | Compound | $38,697 |
| $10,000 | 30 | Compound | $76,123 |
Start Early
The earlier you start investing, the more time compound interest has to work. A 25-year-old investing $200/month will have significantly more at retirement than a 35-year-old investing the same amount.
Calculate your potential growth with our Compound Interest Calculator!