FIRE Calculator
Most PopularShareable
Calculate your FIRE number, years to financial independence, and monthly savings target based on your income, expenses, and investment returns.
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Interactive FIRE Tools
Precision calculators built for your financial independence journey. All calculations run entirely in your browser — no data is ever sent to a server.
Coast FIRE Calculator
For Early Savers
Find out how much you need invested today so compound growth alone carries you to your retirement target — with no additional contributions.
Try it freeSavings Rate Calculator
Budgeting
Calculate your savings rate, see how it maps to years until financial independence, and explore expense breakdowns with what-if scenarios.
Try it freeWithdrawal Simulator
AdvancedMonte Carlo
Run 1,000 Monte Carlo simulations to stress-test your retirement withdrawal strategy. See success rates across the 4% rule, variable, and guardrails strategies.
Try it freeBuilt for Real FIRE Planning
Every calculator uses the same methodologies referenced by leading FIRE researchers and bloggers — including the 4% safe withdrawal rule (Trinity Study), shockingly simple savings rate math (Mr. Money Mustache), and Coast FIRE projections. Full methodology explanations are included in each tool.
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Calculators
1,000
Monte Carlo Runs
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Cost
These tools are for educational and informational purposes only. They do not constitute financial, investment, tax, or legal advice. Please consult a qualified financial professional before making investment decisions. Full disclaimer.