About PlanFolio
PlanFolio was built with one goal: make financial planning accessible to everyone. We believe that tools like the FIRE calculator, compound interest calculator, and retirement calculator should be free, private, and easy to use — no sign-ups, no data collection, no gimmicks.
Why We Built PlanFolio
Most financial tools are either locked behind paywalls, buried in ads, or require you to hand over your personal data. We got tired of it. PlanFolio is our answer: clean, fast calculators that run entirely in your browser. Your financial numbers never leave your device. We do not track you, store your data, or sell your information to anyone.
Private
All calculations happen in your browser. Zero data collection. No accounts, no cookies that track you.
Accurate
Built on industry-standard financial formulas — the 4% rule from the Trinity Study, compound growth models, and retirement drawdown math used by financial planners.
Free Forever
We plan to support PlanFolio through non-intrusive advertising in the future. Core calculators will always remain free.
Built for the FIRE Community
We are part of the FIRE movement ourselves. Every feature is designed with financial independence seekers in mind.
Our Calculators
- FIRE Calculator — Find your financial independence number and see how many years until you can retire early. Includes Lean, Regular, and Fat FIRE modes.
- Compound Interest Calculator — See how your savings grow with daily, monthly, quarterly, or annual compounding. Interactive chart shows principal vs interest over time.
- Retirement Calculator — Project your nest egg, compare 4% vs 3.5% withdrawal rates, and see how long your savings will last in retirement.