Free Investment Calculator Online
Calculate investment growth, future value, compound returns, total contributions, interest earned, ROI, and projected portfolio balance with this free investment calculator.
📊 Investment Calculator
Live Investment EstimateInvestment Inputs
Left SideInvestment Results
Right SideInvestment Breakdown Pie Chart
| Year | Start Balance | Contributions | Growth | End Balance |
|---|
Growth can increase over time when returns are reinvested.
Monthly investing can strongly increase the final portfolio value.
Actual investments can rise or fall and returns are not guaranteed.
What Is an Investment Calculator?
An investment calculator estimates how an investment may grow over time. It uses your initial investment, monthly contributions, expected annual return, investment period, compounding frequency, inflation rate, and optional tax rate to estimate future value, total contributions, investment growth, ROI, after-tax value, and inflation-adjusted value.
This free investment growth calculator is useful for long-term planning, portfolio projections, savings goals, compound return estimates, and comparing different contribution or return scenarios.
Investment Growth Calculator
Estimate future portfolio value based on starting amount, monthly deposits, and expected return.
Compound Return Calculator
See how reinvested returns can grow over time with compounding.
ROI Calculator
Review estimated return on investment based on growth and total deposited amount.
Inflation-Adjusted Value
Estimate future value in today’s purchasing power after inflation.
How Investment Growth Works
Investment growth depends on the amount invested, contribution schedule, rate of return, compounding, fees, taxes, inflation, and time. A longer investment period can allow compounding to have a greater effect, while regular contributions can increase the final balance.
Investment Growth Formula
The calculator uses monthly projection logic and yearly summary rows to estimate investment growth, total contributions, returns, ROI, and inflation-adjusted value.
Investment Calculator Examples
Estimate how a starting balance may grow over 10, 20, or 30 years.
Compare different monthly investment amounts and see the impact on future value.
Review an inflation-adjusted estimate to understand purchasing power.
Benefits of Using an Investment Calculator
Estimate whether your current investment plan may reach your financial target.
Compare contribution amounts, return assumptions, and time periods.
Understand how compounding and time can affect investment growth.
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Frequently Asked Questions
Is this investment calculator free?
Yes. You can estimate investment growth, future value, contributions, ROI, and projected balance for free.
What is future value?
Future value is the estimated value of an investment after contributions and growth over time.
Does this calculator include monthly contributions?
Yes. You can enter a monthly contribution amount and choose contribution timing.
Does it include inflation?
Yes. The calculator estimates an inflation-adjusted value based on the inflation rate entered.
Can I estimate taxes?
Yes. You can enter an optional tax rate on gains to estimate after-tax value.
Are investment returns guaranteed?
No. Investment returns are not guaranteed. This tool provides estimates only.
Can I export the projection table?
Yes. Use the Download CSV button to export yearly investment projections.
Is this financial advice?
No. This calculator is for educational estimates only and is not financial advice.