Investment Growth Calculator
Project how your investments will grow over time with our free compound growth calculator. Visualize the power of long-term investing with regular contributions and realistic return assumptions to plan for retirement, education, or other financial goals.
Historical Investment Returns by Asset Class
| Asset Class | 30-Year Average Return | Risk Level | Typical Volatility | S&P 500 Stocks10.7%High±15-20% annually Total Stock Market10.2%High±15-20% annually Bonds (Aggregate)5.5%Low-Medium±5-8% annually Real Estate (REITs)9.5%Medium-High±12-18% annually 60/40 Portfolio8.5%Medium±10-12% annually
Investment Growth Examples
Monthly InvestmentYears7% Return10% Return $50010$86,006$102,422 $50020$260,464$382,848 $50030$611,729$1,139,647 $1,00010$172,012$204,845 $1,00020$520,927$765,697 | $1,000 | 30 | $1,223,459 | $2,279,294 |
Investment Growth Calculator
``javascript
function calculateInvestmentGrowth(initialInvestment, monthlyContribution, annualReturn, years) {
const monthlyRate = annualReturn / 100 / 12;
const months = years * 12;
let balance = initialInvestment;
for (let m = 0; m < months; m++) {
balance = (balance * (1 + monthlyRate)) + monthlyContribution;
}
const totalContributions = initialInvestment + (monthlyContribution * months);
const investmentGain = balance - totalContributions;
const percentageGain = ((balance - totalContributions) / totalContributions) * 100;
return {
futureValue: balance.toFixed(2),
totalContributions: totalContributions.toFixed(2),
investmentGains: investmentGain.toFixed(2),
percentageReturn: percentageGain.toFixed(1) + '%'
};
}
``
The Impact of Starting Early
Time is your greatest asset in investing. Starting 10 years earlier can double your final balance even with the same contributions. The difference between investing at 25 vs 35 for retirement at 65 is dramatic—the extra decade of compounding makes an enormous difference.