Compound Interest & Investment Growth Calculator
Watch compounding do the work.
Compound Interest & Investment Growth Calculator simulates monthly-compounded growth of an initial investment plus regular monthly contributions over any time horizon, using the standard future-value-of-an-annuity math. A visual growth bar breaks the final balance into initial investment, total contributions, and pure compound interest earned, so it's immediately clear how much of the outcome came from your own money versus the market — plus a full year-by-year table of contributions, interest, and balance.
- →Monthly-compounded future value with a fixed monthly contribution
- →Visual breakdown of initial investment vs. contributions vs. interest earned
- →Full year-by-year table of contributed, interest earned, and balance
- →Handles the zero-return edge case correctly (simple accumulation)
- →Illustrative projection based on a constant assumed rate, clearly framed as such
- →100% local calculation — nothing you enter is sent to a server
- →Watermarked by Cikal Studio Labs · Works on any device, no install required
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