Compound Interest Calculator – Investment Growth Calculator
A compound interest calculator (or investment growth calculator) shows how much a lump sum grows over time when interest is compounded. You enter the initial amount, annual rate, and number of years. This article explains compound interest and links to our calculator.
Quick Answer
| Label | Value |
|---|---|
| Principal | $10,000 |
| Annual rate | 5% |
| Years | 10 |
| Future value | $16,288.95 |
How It Works
Future value = principal × (1 + rate)^years. With compound interest, you earn interest on prior interest. For $10,000 at 5% for 10 years: $10,000 × (1.05)^10 ≈ $16,289. Our calculator compounds annually. Real investments may compound monthly or at other intervals.
Additional Notes
Use a conservative rate for long-term planning. Returns are not guaranteed. For regular contributions, use our Retirement Calculator.
Use Our Calculator
Try our Compound Interest Calculator for your own numbers: /calculators/compound-interest-calculator
Related Calculators
Interest that is calculated on the principal plus any interest already earned, so growth accelerates over time.
Annually. For monthly compounding the result would be slightly higher.
Yes. Use it to see how a lump sum grows. For monthly deposits use our Retirement Calculator.