Model a starting amount and monthly contributions with a growth rate you choose, then see the result before and after inflation.
Growth is earned on both your contributions and on earlier growth, which is why long periods change results so much. This tool simulates month by month, so contributions are included exactly when you make them.
The final value is a nominal number in future money. Dividing it by (1 + inflation) raised to the number of years shows roughly what it could buy in today’s money.
It turns your nominal annual rate into an effective rate. Monthly compounding at 10% equals about 10.47% effective per year.
The final value divided by (1 + inflation) ^ years. It estimates purchasing power, not a guaranteed amount.
No. Real investments fluctuate, can lose value, and are affected by fees and tax that this simple model leaves out.