Financial decisions,
visualized clearly
Premium calculators for mortgages, investments, and debt payoff. Real-time simulations with world-class interaction design.
All Calculators
Each calculator features real-time updates, dual input controls, and mobile-optimized design.
Mortgage
Calculate payments, amortization, and total interest for your home loan
Rent vs Buy
Compare the true cost and wealth-building potential of renting vs buying
Refinance
Analyze breakeven points, opportunity costs, and true savings
Real Estate
Model portfolio growth with compound appreciation and reinvestment
Debt Payoff
Compare snowball vs avalanche strategies to get debt-free faster
Savings
Visualize compound interest and reach your financial milestones
Retirement
Plan for financial independence with two-phase modeling
Solo 401(k)
Maximize self-employed retirement contributions with employee and employer deferrals
Financial Planner
Model your complete financial picture. Compare FIRE strategies, project your net worth, and find your path to financial independence.
- Income, assets & debt modeling
- Multiple FIRE strategies
- Save & compare scenarios
Portfolio Tracker
Track your investments and real estate in one place. See your complete net worth and feed data into your financial plan.
- Stocks, ETFs & mutual funds
- Real estate properties
- Gains, cashflow & net worth
Built for precision
Every calculation is deterministic and transparent. No hidden formulas.
Real-time
Calculations update instantly as you adjust inputs
Mobile-first
Optimized for touch with larger targets and gestures
Auto-saved
Your inputs persist across sessions automatically
Ready to take control of your finances?
Create a free account to save your calculations, track your portfolio, and build your financial plan.