🔥 FIRE Lab

When can you stop working? Run the numbers — instantly, privately, in your currency.

Currency

Your age

Current savings

Monthly contribution

Expected return %/yr

Inflation %/yr

Annual spending (retired)

Withdrawal rate %

FIRE number

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FIRE in

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At age

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How this works

All amounts are in today's money: growth uses your expected return minus inflation (real return), compounded monthly with your contributions (dollar-cost averaging). Your FIRE number is annual spending ÷ withdrawal rate — the classic 4% rule when the rate is 4%.

🌱 Coast FI: the pot that reaches your FIRE number by age 65 with zero further contributions. 🥬 Lean FI: 70% of your spending. 👑 Fat FI: 150% of it.

Estimates for planning fun only — not financial advice. Nothing you type leaves this page.