Investment Calculator
Project the future value of an initial investment plus monthly contributions.
Estimates for education only — not investment advice. Projections assume a constant return; real markets fluctuate and returns are not guaranteed.
How it works
- 1Enter an initial amount and a monthly contribution.
- 2Set an expected annual return and a number of years.
- 3See the projected future value and how it grows over time.
Use cases
- Project a brokerage or index-fund balance over time.
- See how monthly contributions compound.
- Compare different return assumptions.
Frequently asked questions
Are returns guaranteed?
No. This projects a constant assumed return for illustration. Real market returns vary year to year and can be negative.
How are contributions compounded?
Monthly: each month the balance grows by the monthly rate, then the contribution is added.
Is my data stored?
No. Everything runs in your browser.
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