Investment Growth Calculator

Like the compound interest calculator, but adds an optional inflation input so the projected future value can be shown in today's purchasing power.

1. Enter starting investment, contribution amount, and how often you contribute.
2. Set the expected annual return and the time horizon.
3. Optionally add an inflation rate to see real (purchasing-power-adjusted) value.
4. Read the future value, total invested, and estimated gain.

$10,000 start, $500/mo, 6% return, 25 years, 2.5% inflation → nominal future value about $389,000; real future value about $211,000.

• Ignoring inflation. A return of 5% with 3% inflation is really 2% in purchasing power.
• Treating projections as forecasts.
• Forgetting taxes — the real number depends on your account type.