NUMORA originals · NUMORA
Fire Calculator
Given income, spending and what you already have, roughly which year could living costs stop needing a job?
Open interactive calculatorHow to use
FI number = annual spend / SWR. Time-to-FI via compounding. Not advice.
Formula
FI = spend / SWR; n from inverse FV
FAQ
Is this Fire calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
FI number = annual spend / SWR. Time-to-FI via compounding. Not advice.
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