Question 1

What is a Coast FIRE Calculator?

Accepted Answer

Coast FIRE is a financial independence strategy where you save aggressively early, then let compound interest grow your portfolio to your FIRE number by retirement — without contributing another dollar.

References

Question 2

How does the Coast FIRE Calculator work?

Accepted Answer

FIRE Number = Annual Expenses × 25 (4% withdrawal rule) Then: Coast Number = FIRE Number ÷ (1 + real return)^years to retirement Then: Typical real return assumption: 7% nominal (5% real) Then: Once you hit the Coast Number, you only need to cover living expenses.

Question 3

Can you give an example of how to use the Coast FIRE Calculator?

Accepted Answer

Example: Input $40K expenses, age 30, retire 65 gives a result of FIRE number $1M. Coast number ~$95K today at 7% growth.

Question 4

Is the Coast FIRE Calculator free to use?

Accepted Answer

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

Question 5

How accurate is the Coast FIRE Calculator?

Accepted Answer

Our Coast FIRE Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Coast FIRE Calculator

Coast FIRE Calculator

What is Coast FIRE Calculator?

How to Use Coast FIRE Calculator

Example Coast FIRE Calculator

Coast FIRE Number by Age (7% growth, $40K/yr expenses)

Settings