This free compound interest calculator shows exactly how your savings or investments grow over time. Whether you're comparing daily, monthly, quarterly, or annual compounding, this compound interest calculator gives you the precise final amount and total interest earned — instantly, with no signup required. Adjust your principal, rate, and time period below to see your real compound interest calculator results.
| Year | Balance | Interest Earned |
|---|---|---|
| 1 | $10,722.90 | $722.90 |
| 2 | $11,498.06 | $1,498.06 |
| 3 | $12,329.26 | $2,329.26 |
| 4 | $13,220.54 | $3,220.54 |
| 5 | $14,176.25 | $4,176.25 |
| 6 | $15,201.06 | $5,201.06 |
| 7 | $16,299.94 | $6,299.94 |
| 8 | $17,478.26 | $7,478.26 |
| 9 | $18,741.77 | $8,741.77 |
| 10 | $20,096.61 | $10,096.61 |
Compound interest is interest calculated on both your initial principal and the accumulated interest from previous periods. Unlike simple interest, which only applies to the original amount, compound interest causes your money to grow exponentially over time. The more frequently interest compounds (daily vs. annually), and the longer your time horizon, the more dramatic the growth. This is why starting to invest early, even with small amounts, often outperforms investing larger amounts later.