Compound Growth & FIRE Calculator
Plan your path to Financial Independence with free, privacy-first tools. Calculate compound growth, estimate your FI date, and discover how small lifestyle changes can accelerate your journey — all locally in your browser.
Compound Interest Calculator
See how your savings grow over time with compound interest. Compare nominal vs. inflation-adjusted values and visualize your wealth trajectory.
Calculate Growth →🔥FIRE Calculator
Estimate when you can achieve financial independence. Get your FI number, see your Possibility Score, and explore how spending changes affect your timeline.
Plan Your FI →Why Use Our FIRE & Compound Calculator?
The US personal finance landscape is split between overly complex tools and platforms that push you toward paid products. Our calculators are different:
- 100% Free & Private — All calculations run locally in your browser. No account required, no data collected.
- Instant, Visual Results — See your growth trajectory charted year-by-year with clear breakdowns of contributions vs. compound growth.
- Personalized Insights — Get actionable, assumption-aware insights based on your specific inputs, not generic advice.
- Spending Levers — Explore how changes to everyday expenses (coffee, streaming, dining out) could impact your FI timeline.
- Transparent Assumptions — Every result shows exactly what assumptions were used, with clear disclaimers about limitations.
Who Is This For?
Whether you're a young professional starting your first 401(k), a FIRE enthusiast running multiple scenarios, or someone who simply wants a reality check on their retirement timeline, our tools provide clear, honest estimates without sales pitches or upsells.
How Our Calculators Work
Our Compound Interest Calculator uses the standard compound interest formula with monthly compounding to project your investment growth. The FIRE Calculator combines this with Safe Withdrawal Rate (SWR) methodology to estimate your Financial Independence number and timeline.
All results are clearly labeled as estimates based on assumptions. We always show both nominal and inflation-adjusted values so you can see the real purchasing power of your future savings.