The calculators
Plug in your numbers. Results update as you type. Nothing you enter leaves your device.
FIRE Number
Your annual spending × 25 (or whatever withdrawal rate you prefer). The finish line.
Years to FIRE
Savings + contributions + time. See how many years until you can leave, with a chart.
Cost of a Habit
What a daily, weekly or monthly expense would grow into if invested, and how much retirement money it takes to fund it forever.
Coast FIRE
Have you already saved enough that compounding can finish the job by retirement age?
Educational only, not financial advice. All calculators use simplified, constant inflation-adjusted returns.