Coast FIRE Calculator
How much do you need saved today to let compound interest carry you to retirement?
Your Numbers
What you need per year (today's dollars)
What you're adding to savings each year
Real (after inflation)
Enter your numbers to find your Coast FIRE point
Discover when compound interest takes the wheel
What You'll Get
Your Coast Number
How much saved today lets compound growth alone carry you to your FI target
Years to Coast
Exactly how long until you can stop contributing to retirement for good
25× Rule Target
Your full FI number, built from your real annual spending
Growth Projection
What your current savings become by retirement age with zero further contributions
Instant
Results in milliseconds
100% Free
No signup, no credit check, unlimited calculations
📋 How It Works
Enter Current Savings & Spending
What you have invested now, and your real annual spending
Set Your Retirement Age & Return Rate
Target age and expected real return (7% is a common baseline)
See Your Coast Number
Whether you’ve already coasted, and if not, how many years until you do
Disclaimer: Results are estimates for educational purposes only and should not be considered financial advice. Consult a licensed financial advisor before making investment, mortgage, or major financial decisions.