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Compound Interest Calculator
Calculate compound interest and investment growth
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Financial Calculators ✅ Free to Use
Compound Interest Calculator
Calculate how your investment will grow over time with compound interest. See the power of compounding!
$20,096.61
Final Amount
$10,096.61
Interest Earned
101.0%
Total Return
Investment Summary
Initial Investment: $10,000.00
Annual Interest Rate: 7%
Time Period: 10 years
Compound Frequency: Monthly
Final Amount: $20,096.61
Interest Earned: $10,096.61
Total Return: 101.0%
Effective Annual Rate: 7.23%
Year-by-Year Growth
| Year | Balance | Total Interest | Yearly Growth |
|---|---|---|---|
| 1 | $10,722.90 | $722.90 | $722.90 |
| 2 | $11,498.06 | $1,498.06 | $775.16 |
| 3 | $12,329.26 | $2,329.26 | $831.20 |
| 4 | $13,220.54 | $3,220.54 | $891.28 |
| 5 | $14,176.25 | $4,176.25 | $955.71 |
| 6 | $15,201.06 | $5,201.06 | $1,024.80 |
| 7 | $16,299.94 | $6,299.94 | $1,098.89 |
| 8 | $17,478.26 | $7,478.26 | $1,178.32 |
| 9 | $18,741.77 | $8,741.77 | $1,263.51 |
| 10 | $20,096.61 | $10,096.61 | $1,354.84 |
Compound Interest Formula
A = P(1 + r/n)nt
A = Final amount
P = Principal (initial investment)
r = Annual interest rate (decimal)
n = Compound frequency per year
t = Time in years
Your calculation: A = 10,000(1 + 0.0700/12)12×10
Investment Tips
💡 Start Early
The earlier you start investing, the more time your money has to compound and grow exponentially.
📈 Frequency Matters
More frequent compounding (monthly vs. annually) can significantly increase your returns over time.