Explore a FIRE target without treating one withdrawal rate or return assumption as universally safe.
Calculate with the FIRE Calculator
Enter the details below. Required values are validated before results are shown.
FIRE Calculator results
How to use the FIRE Calculator
- Choose the display currency and any calculation mode or frequency.
- Enter each required value using a consistent currency and time basis.
- Select Calculate or press Enter.
- Review the result explanation, assumptions, and any schedule before relying on the estimate.
Worked example
Annual spending of 40,000 at an editable 4% withdrawal-rate example gives a current 1,000,000 target before spending adjustment.
Understanding the results
The summary separates the most important output from supporting values. Currency selection changes formatting only; it does not convert exchange rates or alter a currency-independent formula.
Frequently asked questions
Is the 4% withdrawal-rate example guaranteed to be safe?
Assets and annual contributions are projected until they meet the inflation-growing target or a 100-year bound. The result depends on the values and assumptions entered, so compare it with the applicable provider or official rule.
Can I use decimal values in the FIRE Calculator?
Yes. Decimal values are supported. Results are calculated at full JavaScript numeric precision and formatted for readability.
Are the FIRE Calculator results guaranteed?
No. The calculator provides an estimate based on the entered assumptions and is not financial, tax, investment, lending, payroll, or legal advice.