401(k) / FIRE Retirement Calculator
Estimate your retirement nest egg and safe withdrawal rate. Fast, free, and fully client-side.
Future Nest Egg
Total balance at age 65
$2,376,362
Purchasing Power
Inflation-adjusted to today's dollars
$844,520
Safe Withdrawal
Est. monthly income in today's dollars
$2,815/mo
How the 401(k) / FIRE Retirement Calculator Works
Calculates total nest egg at retirement, inflation-adjusted nest egg, and estimated safe monthly withdrawal based on current savings, monthly contributions, and expected returns.
Formula
FV = P(1 + r/n)^(nt) + PMT × (((1 + r/n)^(nt) - 1) / (r/n))
Calculates compound interest on principal (P) and regular contributions (PMT).
Calculation Example
Saving $500 monthly for 30 years at a 7% return yields approximately $606,000.