The toolkit
All Calculators
18 free financial calculators — real-time results, no sign-up required.
Investing
— Model investment growth, returns, and strategies.Mortgage
— Calculate payments, interest, and amortization.Mortgage Calculator
Calculate monthly payments, total interest, and full amortization schedule.
Auto Loan Calculator
Estimate your monthly car payment, total interest, and full payoff schedule.
Rent vs Buy Calculator
Compare the true cost of renting vs buying a home and find your break-even year.
Real Estate
— Analyze rental deals, returns, and cash flow.Rental Property Calculator
Estimate cash flow, cash-on-cash return, cap rate, and NOI on any rental.
Cap Rate Calculator
Find the capitalization rate and NOI of a rental to compare deals.
BRRRR Calculator
Model Buy, Rehab, Rent, Refinance, Repeat and your capital recovery.
1% Rule Calculator
Quickly screen a rental with the 1% rule, 2% rule, 50% rule, and GRM.
Planning
— Plan for retirement, savings goals, and debt freedom.FIRE Calculator
Find out when you can retire early using the 4% rule.
Savings Goal Calculator
How much do you need to save each month to reach your goal?
Debt Payoff Calculator
Compare debt snowball vs avalanche to find your fastest path to debt freedom.
Inflation Calculator
See the real purchasing power of money adjusted for inflation.
Net Worth Calculator
Track your assets and liabilities to calculate your true net worth.
Emergency Fund Calculator
Find out how big your emergency fund should be and how long to build it.
Take-Home Pay Calculator
Estimate your net paycheck after federal tax, FICA, and state tax.
Currency
— Convert between major world currencies instantly.Coming Soon
AI Financial Advisor
Personalized insights and optimization tips powered by Claude AI — based on your actual calculator inputs.