Investment Calculator
Project your investment growth with compound returns
Investment Details
1 10 20 30 40 50
20 years
1% 5% 10% 15% 20%
7%
0% 3% 6% 10%
2.5%
Projection Results
Future Value
$312,909
Total Contributions
$130,000
Interest Earned
$182,909
Investment Growth Over Time
Value Composition
Inflation-Adjusted Value
Year-by-Year Growth
Year | Contributions | Interest | Total Value | Adjusted Value |
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Enter your investment details and click “Calculate” to see projections
Investment Principles
Understanding how investments grow over time is key to building long-term wealth. Here are the fundamental concepts:
The Power of Compound Interest
Compound interest is often called the “eighth wonder of the world” because it allows your money to grow exponentially over time. It works by earning returns not just on your original investment, but also on the accumulated returns from previous periods.
Key Factors in Investment Growth:
- Initial Investment: The larger your starting amount, the more significant your growth potential
- Regular Contributions: Consistent additions to your investment can dramatically increase your final balance
- Time Horizon: The longer your money remains invested, the more it can benefit from compounding
- Rate of Return: Higher returns accelerate growth but often come with higher risk
- Inflation: Reduces purchasing power over time, making real returns more important than nominal returns
Investment Growth Formula:
FV = P × (1 + r/n)^(n×t) + PMT × [((1 + r/n)^(n×t) - 1] / (r/n)
- FV = Future value of investment
- P = Principal investment amount
- PMT = Monthly contribution amount
- r = Annual interest rate (decimal)
- n = Number of compounding periods per year
- t = Time the money is invested for (years)
Strategies to Maximize Returns:
- Start investing as early as possible to maximize compounding
- Contribute regularly, even small amounts add up over time
- Reinvest dividends and interest to accelerate growth
- Consider tax-advantaged accounts like IRAs or 401(k)s
- Maintain a diversified portfolio to manage risk