Calculators
15 free personal-finance calculators in three categories. All math runs in your browser. No accounts.
- FIRE Family
When can you stop working?
Four flavors of financial independence — same compounding math, different lifestyle bets.
4 calculators → - Income & Wealth
What you make. What you keep.
Earn, save, sell — the side of the balance sheet that tracks how much money flows toward you.
6 calculators → - Debt & Costs
What things actually cost.
Money flowing out — over the full term, not the sticker. Loans, recurring obligations, big purchases.
5 calculators →
Or scan the full list of 15 calculators on a single page.