Investment Calculator

Our comprehensive investment calculator helps you project the future value of your investments. Calculate how much your portfolio will grow with compound interest, reinvested dividends, and regular contributions. Compare different investment scenarios, see year-by-year growth, and plan your financial future with confidence.

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$10,000
$500
8%
20 years
Future Value
$343,214
Real: $189,743
Contributions
$130,000
Returns
$213,214
Total ROI
164%
Dividends
$0

show_chart Growth Chart

Value Contrib
$400k $200k $0

table_chart Year-by-Year

Year Contrib Returns Value

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Investment Projection ($10K + $500/mo at 8%):

  • Future value: $343,214 after 20 years
  • Your contributions: $130,000 (initial + monthly)
  • Investment returns: $213,214 (164% ROI)

The magic of compounding: Your money earns $213K while you only put in $130K. Time in the market beats timing the market!

lightbulb Smart Investing Tips

  • 1. Start early - Time is your greatest asset with compound returns.
  • 2. Stay consistent - Regular contributions beat market timing.
  • 3. Diversify - Spread risk across stocks, bonds, and asset classes.
  • 4. Reinvest dividends - Let compound growth work harder for you.

bar_chart Historical Average Returns

S&P 500 Index ~10%/year
Total Stock Market ~9.5%/year
Bonds (Aggregate) ~5%/year
60/40 Portfolio ~8%/year

*Long-term historical averages. Past performance doesn't guarantee future results.

account_balance Tax-Advantaged Accounts

401(k) $23,000/yr

Pre-tax contributions, employer match

Roth IRA $7,000/yr

Tax-free growth & withdrawals

Traditional IRA $7,000/yr

Tax-deductible contributions

*2024 contribution limits. +$1,000 catch-up if 50+

calculate Rule of 72

Estimate how long to double your money:

72 ÷ Return Rate = Years to Double
  • • At 6% → ~12 years to double
  • • At 8% → ~9 years to double
  • • At 10% → ~7.2 years to double

How to Use This Calculator

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Enter Initial Investment

Input your starting investment amount.

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Set Monthly Contribution

Enter how much you'll invest each month.

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Choose Expected Return

Set your expected annual return rate.

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See Your Growth

View projected value and year-by-year breakdown.

The Formula

Your investment grows through compound returns (earning returns on returns) plus regular contributions. The longer you invest and the higher the return rate, the more your money grows through compounding.

FV = P(1 + r)^t + PMT × [((1 + r)^t - 1) / r]

lightbulb Variables Explained

  • FV Future Value of investment
  • P Initial investment (principal)
  • PMT Regular contribution amount
  • r Expected annual return (decimal)
  • t Investment time period (years)

tips_and_updates Pro Tips

1

Start investing early - time is your greatest asset with compound returns

2

Diversify across stocks, bonds, and other assets to manage risk

3

Historical S&P 500 average return is about 10% annually (7% after inflation)

4

Use tax-advantaged accounts (401k, IRA) to maximize growth

5

Reinvest dividends to accelerate compounding

6

Stay invested during market downturns - time in market beats timing the market

7

Review and rebalance your portfolio annually

8

Consider your risk tolerance when choosing expected return rates

Calculate Your Investment Growth

Our free investment calculator shows how your investments will grow over time. Enter your initial investment, monthly contributions, and expected return to see your future portfolio value. Calculate investment returns with compound interest, compare scenarios, and plan your financial future.

Investment Return Calculator

Calculate your investment returns with our comprehensive calculator. See how compound growth turns regular contributions into substantial wealth over time. Input your expected return rate to project future portfolio value.

Investment Growth Calculator

Watch your investments grow with compound returns. Our investment growth calculator shows year-by-year projections so you can track your progress toward financial goals. See the power of long-term investing.

Stock & ETF Investment Calculator

Calculate returns for stocks, ETFs, mutual funds, and index funds. Use historical average returns or set custom expectations. See how different return rates affect your long-term wealth.

Monthly Investment Calculator

Find out how much to invest monthly to reach your goals. Our calculator shows the required monthly contribution for any target amount. Start small and let compound returns do the heavy lifting.

Frequently Asked Questions

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Data sourced from trusted institutions

All formulas verified against official standards.