🌊 Coast FIRE Calculator

Stop Contributing.
Let Time Do the Work.

Most calculators treat investing as one phase. It's actually two. Find the exact moment you can stop contributing and let compound interest carry you to freedom.

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Did you know? Someone who invests for 10 years starting at 25 and then stops often ends up with more money than someone who invests for 30 years starting at 35. Time in market beats time contributing. See the math →

Two Phases. One Complete Picture.

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Contribute

You invest actively every month, building your base.

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Coast

You stop contributing. Compound interest keeps growing your money.

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Freedom

You reach financial independence. Your money has done the work.

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Coast FIRE Calculator

Enter your contribution years and invested years separately — see the number that changes everything. The only calculator that models the full two-phase investing journey.

Initial investmentMonthly contributionContribution yearsCoast yearsExpected return
Calculate My Coast Number →
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Withdrawal Calculator

How long will your retirement savings last? Model monthly withdrawals, see depletion risk, and find your safe withdrawal rate.

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The counterintuitive truth about compounding

Alex, started at 25 Wins 🏆

Contributed $500/mo for 10 years, then stopped completely

$1,240,000 at 65

Jordan, started at 35

Contributed $500/mo for 30 years right up to retirement

$940,000 at 65

Assumes $500/month, 8% annual return.

Run Your Own Numbers →

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Built different, by design.

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Transparent Math

Every formula is explained. No black boxes.

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Two-Phase Model

The only calculator separating contribution from coast years.

Instant Results

No signup, no email. Just your numbers, immediately.

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No Tracking

Calculations run in your browser. Your data stays private.