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🇨🇳🇮🇳
6 real tools · full math shown · runs in your browser

Real estate numbers, investor-grade

Not a mortgage calculator — a real estate investing toolkit. Cap rate, cash-on-cash return, flip profit, and full deal screening, worked the way an actual investor underwrites a property.

No sign-up No data leaves your browser Formulas match standard underwriting practice
📐Cap Rate CalculatorNet operating income against purchase price — the standard first screen for any income property
💵Cash-on-Cash ReturnFull financed-deal math: mortgage payment, NOI, annual cash flow, and return on actual cash invested
📊Rental Cash Flow AnalyzerEvery monthly expense against rent — tax, insurance, HOA, maintenance reserve, management, vacancy
🔨Flip Profit & ARV CalculatorPurchase, rehab, holding and selling costs against after-repair value, plus the 70% rule max offer
✅1% Rule & Rent ScreenerA fast first-pass screen: rent-to-price ratio against the 1% and 50% rules of thumb
📈Appreciation & Equity GrowthProject home value and total equity forward, combining appreciation with real loan paydown

Everything runs in your browser

No account, no data sent anywhere. These are the same underwriting formulas used across real estate investing — cap rate, cash-on-cash return, and ARV-based flip analysis — checked against standard investor reference formulas before this site shipped. Estimates only: always verify local property tax, insurance, and financing terms before committing capital.

📐 Cap Rate Calculator

Net operating income divided by purchase price — the fastest way to compare income properties on an apples-to-apples basis, independent of financing.

Cap rate excludes financing costs on purpose — it measures the property itself, so you can compare a cash deal against a financed one on equal footing. A "good" cap rate varies enormously by market; use it to compare properties, not as a universal target.

💵 Cash-on-Cash Return Calculator

The return that actually matters once financing is involved: annual pre-tax cash flow divided by the cash you actually put in.

📊 Rental Cash Flow Analyzer

List every monthly cost against rent to see the actual net cash flow a unit produces — not just the mortgage payment.

🔨 House Flip Profit & ARV Calculator

All-in cost against after-repair value, including holding and selling costs most flip estimates leave out — plus the 70% rule maximum offer.

The 70% rule is a rough screening heuristic (max offer = 70% of ARV minus rehab cost), not a guarantee of profitability — always run the full cost breakdown above for a real deal.

✅ 1% Rule & Rent Screener

A fast first-pass filter before a full underwriting — monthly rent as a percentage of purchase price, checked against the common 1% and 50% rules of thumb.

The 1% rule and 50% rule are quick screens, not underwriting — a deal that fails them can still work in strong-appreciation markets, and one that passes can still fail on real numbers. Use this to shortlist, then run the full cash flow and cash-on-cash tools above.

📈 Appreciation & Equity Growth Projector

Project property value and total owner equity forward year by year — combining market appreciation with real loan principal paydown.

Appreciation is never guaranteed and varies enormously by market and cycle — this uses a constant rate as a planning simplification, not a forecast.