Compound Interest Calculators
Calculate growth for both long-term investments and active trading strategies
P2P & Investment Compound Calculator
Calculate how your investments grow with compound interest, regular contributions, and optional withdrawals
Final Balance
$113,669.42
Interest Earned
$43,669.42
Net Invested
$70,000.00
Total ROI
62.38%
Initial Investment
$
%
Contributions
$
Withdrawals
Results Summary
Total Contributions
$70,000.00
Interest Earned
$43,669.42
Return on Investment
62.38%
Final Balance
$113,669.42
38.42% from interest
Growth Visualization
Understanding Compound Interest
Compound interest is the interest calculated on the initial principal and the accumulated interest from previous periods. It's often called "interest on interest" and can significantly increase your investment returns over time.
The Formula
A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) - 1) / (r/n)]
- A = Final amount
- P = Principal (initial investment)
- r = Annual interest rate (decimal)
- n = Number of times interest is compounded per year
- t = Time in years
- PMT = Regular contribution amount
Tips for Maximizing Returns
- Start early: Time is your greatest ally with compound interest
- Contribute regularly: Consistent contributions accelerate growth
- Reinvest earnings: Don't withdraw interest - let it compound
- Compare frequencies: More frequent compounding = higher returns