Is a Coast FI calculator different from a Coastfire calculator?
Both names, including coasting calculator, describe the same model.
Calculators
Free Coast FIRE calculator to estimate your retirement savings milestone
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Free tool to calculate how much you need invested today to reach your Coast FIRE retirement target without further contributions.

Freedom Calcs provides a free Coast FIRE calculator and four related retirement planning calculators. The Coast FIRE tool estimates how much you need invested today for your portfolio to grow toward a retirement target without additional savings, accounting for your chosen return and inflation assumptions. The site also offers Barista FIRE, Fat FIRE, Lean FIRE, and FIRE Number calculators to model different retirement scenarios.
All calculators are free, require no account, and run in your browser with no data uploads. The tool shows deterministic scenarios based on your inputs rather than market forecasts. Freedom Calcs publishes transparent formulas, sources, and a correction process to help users inspect and verify the calculations.
Pricing model: Free
Both names, including coasting calculator, describe the same model.
Include retirement investments and exclude emergency funds, near-term spending money, and your home.
The 7% return and 3% inflation defaults are examples. Test less favorable assumptions as constant growth cannot capture market risk.
No. Historical withdrawal studies cannot guarantee future outcomes.
No. Enter portfolio-funded spending after other income. Taxes, fees, debt, lifespan, market volatility, and post-retirement withdrawals are excluded.
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