FIRE Calculators
Tools for planning Financial Independence and Early Retirement. Whether you're targeting Lean FIRE, Barista FIRE, or full Fat FIRE, these calculators help you model the path — all without leaving your browser.
Available Calculators
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Semi-Retirement Calculator (Barista FIRE)
Find the nest egg needed to semi-retire with part-time income covering remaining expenses.
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Coast FIRE Calculator
Calculate the amount you need invested today so compounding does the rest — no more contributions needed.
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Lean FIRE Calculator
Model an early retirement on a lean budget using the 4% rule and sequence-of-returns analysis.
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FIRE Number Calculator
Determine your personal FIRE number based on annual spend and chosen safe withdrawal rate.