About the Investment Calculator
Project the future value of an investment with a starting amount, monthly contributions that can increase each year, and an expected annual return — shown in future dollars and today’s money.
How does the Investment Calculator work?
The balance compounds monthly at the expected return, contributions are added each month, and the final value is also discounted by inflation so you can see its real buying power.
Investment Calculator formula
Bₘ = Bₘ₋₁ × (1 + r) + C
real value = nominal ÷ (1 + inflation)^years