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Your tools for the journey
Every calculator you need to map, track, and accelerate your path to financial independence.
FIRE Number
Calculate exactly how much you need to retire — and how long it will take at your current savings rate.
Open calculatorCoast FIRE
Find the savings amount where you can stop investing and let compound interest carry you to retirement.
Open calculatorCompound Interest
Watch your wealth grow. Visualize contributions vs. gains over decades — with optional inflation adjustment.
Open calculatorWhat is the FIRE movement?
FIRE — Financial Independence, Retire Early — is a movement built around one idea: save and invest aggressively, build a portfolio large enough to live off the returns, and buy back your time. Years or decades before traditional retirement age. The core tool is the 4% rule: withdraw 4% of your portfolio per year and it historically lasts 30+ years.
Lean FIRE
Retire on a minimal budget, typically under $40k/year. Maximum frugality, maximum freedom.
Fat FIRE
Retire with a generous lifestyle — $80k+/year. Larger savings target, broader runway.
Barista FIRE
Semi-retire with part-time work covering daily expenses. The flexible middle path.
From the path
What Is the 4% Rule — and Does It Still Hold Up?
The 4% rule is the foundation of every FIRE number calculation. Here's where it came from, what it actually says, and whether you can trust it for a 40-year retirement.
Read article →What Is FIRE — and Could It Actually Be for You?
Financial Independence, Retire Early sounds like a fantasy for people with six-figure salaries and no social life. It's not. Here's what FIRE actually means, why ordinary people are doing it, and how to start thinking about your own path.
Read article →Ready to find your number?
Your FIRE number is the first milestone on the path. It takes 5 minutes — and might surprise you.
Calculate my FIRE number