Investment Calculator

Estimate how your money could grow over time with compound returns and recurring contributions. This free investment calculator helps you project future value, total deposits, and total earnings.

Results

Future Value
$0
Total Contributions
$0
Total Earnings
$0
Inflation-Adjusted Value
$0
Estimated Annual Growth
$0
Ending Monthly Equivalent
$0

Enter your investment details and click Calculate to see your projected investment growth.

How this investment calculator works

This investment calculator estimates how much an investment may grow over time based on your starting balance, recurring monthly contributions, investment length, and expected annual return.

It also shows your projected total contributions, total investment earnings, and an inflation-adjusted future value so you can compare your ending balance in today’s dollars.

What to enter

  • Your starting investment amount
  • Your monthly contribution amount
  • Your expected annual rate of return
  • Your investment period in years
  • Your preferred compounding frequency
  • An inflation estimate for purchasing power comparison

What the results mean

  • Future Value: projected ending account balance
  • Total Contributions: how much money you added
  • Total Earnings: growth generated by returns
  • Inflation-Adjusted Value: future value expressed in today’s dollars
  • Estimated Annual Growth: average growth per year over the period

Investment calculator formula

This calculator combines compound growth on your initial investment with the future value of recurring contributions.

Future Value of Initial Investment:
FV = PV × (1 + r / n)nt

Future Value of Recurring Contributions:
FV = PMT × [((1 + i)m - 1) / i]

Where:

Tips for using an investment calculator

Use realistic return assumptions

Higher return estimates can make future balances look much larger. Using a conservative or moderate estimate can help you plan more carefully.

Contribute consistently

Regular monthly investing can have a major effect on long-term growth. Small contributions add up significantly over time with compounding.

Watch inflation

A large future balance may still buy less than expected after inflation. That is why the inflation-adjusted value is useful for planning.

Review as goals change

You can rerun the calculator whenever your contribution level, time horizon, or return expectations change.

Frequently asked questions

What is a good annual return to use?

That depends on the type of investments you are modeling. Many people use a long-term average estimate, but the right number depends on risk, diversification, and market conditions.

Does this calculator account for taxes or fees?

No. This version provides a general projection only. Taxes, advisory fees, and fund expenses can reduce actual investment results.

Why does compounding frequency matter?

More frequent compounding generally increases ending value slightly because earnings are added back into the balance sooner.

Can I use this for retirement or college savings?

Yes. This investment calculator works for many long-term savings goals, including retirement, education, major purchases, or general wealth building.

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