Compound Interest Calculator
Calculate how your investments grow over time with compound interest. See the power of compounding with regular contributions and different compounding frequencies.
Investment Details
Enter your investment parameters below
$
%
years
Future Value
$37,405.09
Total Interest
$15,405.09
Effective Rate
7.23%
Total Return
70.02%
Investment Breakdown
After 10 years, your investment will grow to $37,405.09
Initial Investment:$10,000.00
Contributions:$12,000.00
Interest Earned:$15,405.09
Time to Double:9.9 years
Total Deposited:$22,000.00
Growth Over Time
Visualize how your investment grows year by year
Yearly Breakdown
Detailed view of your investment growth each year
| Year | Start Balance | Deposits | Interest | End Balance |
|---|---|---|---|---|
| Year 1 | $10,000.00 | +$1,200.00 | +$762.16 | $11,962.16 |
| Year 2 | $11,962.16 | +$1,200.00 | +$904.00 | $14,066.16 |
| Year 3 | $14,066.16 | +$1,200.00 | +$1,056.10 | $16,322.27 |
| Year 4 | $16,322.27 | +$1,200.00 | +$1,219.20 | $18,741.46 |
| Year 5 | $18,741.46 | +$1,200.00 | +$1,394.08 | $21,335.54 |
| Year 6 | $21,335.54 | +$1,200.00 | +$1,581.61 | $24,117.15 |
| Year 7 | $24,117.15 | +$1,200.00 | +$1,782.69 | $27,099.84 |
| Year 8 | $27,099.84 | +$1,200.00 | +$1,998.31 | $30,298.15 |
| Year 9 | $30,298.15 | +$1,200.00 | +$2,229.51 | $33,727.66 |
| Year 10 | $33,727.66 | +$1,200.00 | +$2,477.43 | $37,405.09 |
Understanding Compound Interest
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. This creates a snowball effect where your money grows exponentially over time.
The Formula
A = P(1 + r/n)^(nt)
- A = Final amount
- P = Principal (initial investment)
- r = Annual interest rate
- n = Compounds per year
- t = Time in years
Tips for Growth
- Start investing early
- Make regular contributions
- Choose higher compound frequencies
- Reinvest your returns
- Be patient - time is your ally