FIRE Number

The FIRE (Financial Independence, Retire Early) Number Calculator determines the investment portfolio size at which your passive income covers all living expenses, making traditional employment optional. The classic FIRE formula multiplies your annual expenses by 25 (the inverse of the 4% safe withdrawal rate). This calculator goes deeper by letting you adjust the withdrawal rate, model different savings rates, and project your exact FIRE date based on current savings and investment rate. The FIRE movement has inspired millions to rethink the traditional retire-at-65 model. Whether you are pursuing lean FIRE, fat FIRE, or barista FIRE, this calculator helps you set a concrete target and track your progress toward financial independence.