Investment & FIRE Tools

Building long-term wealth requires understanding how compound interest works in your favor and having a clear target to aim for. The FIRE (Financial Independence, Retire Early) movement has popularized the concept of calculating the exact portfolio size needed to sustain your lifestyle indefinitely — your FIRE number. Using the widely-studied 4% safe withdrawal rate from the Trinity Study, your FIRE number equals 25 times your annual expenses. Our compound interest and FIRE calculator lets you project investment growth over any time horizon, adjust for inflation to see real purchasing power, model different contribution scenarios, and calculate exactly when your portfolio reaches financial independence. Whether you are just starting to invest, optimizing an existing portfolio, or planning for early retirement, these tools help you visualize the power of consistent investing and compound growth. Every dollar invested today works exponentially harder over time, and our calculator shows you precisely how.