F.I.R.E. Early Retirement Calculator & Passive Runway Budget

Frequently asked questions
How is my financial data kept safe and private?
This application is completely offline-first. It does not transmit data over the internet or connect to external databases. All financial records and settings remain strictly within your device's browser localStorage.
How does the tool calculate my F.I.R.E. number?
The calculator utilizes the established 4% Safe Withdrawal Rule derived from the Trinity Study. Your base FIRE number is determined by multiplying your annual living expenses by 25 (Annual Expenses x 25). You can also adjust the Safe Withdrawal Rate from 3.25% to 4.5% to reflect your personal risk tolerance.
Can I export my calculations to Excel or print them?
Yes. With a single click, you can export your entire portfolio breakdown and retirement metrics into a structured .csv file compatible with Microsoft Excel, Apple Numbers, and Google Sheets. You can also print a publication-grade PDF report directly from the interface.
Does this tool require any ongoing subscriptions or software installations?
None. This is a one-time purchase with standalone offline access. The single HTML file runs natively in any standard web browser (Chrome, Safari, Firefox, Edge, Brave) on Windows, macOS, Linux, iOS, and Android without plugins.