Real Estate Investment Calculators

Built for investors: free, instant analysis tools to help you make smarter property decisions. No sign-up. No data collected.

Free Real Estate Calculators

Cash on Cash Return Calculator

Measure the annual return on the cash you actually invest in a rental property.

Rental Property ROI Calculator

Calculate cash flow, cap rate, cash-on-cash return, and total ROI for rental properties.

Rent vs Buy Calculator

Compare the true costs of renting versus buying a home over time with a year-by-year analysis.

Mortgage Amortization Calculator

See your monthly payment, total interest, and full amortization schedule with optional extra payments.

Fix and Flip Profit Calculator

Estimate net profit, margins, and break-even ARV for house flipping projects.

Home Affordability Calculator

Find out how much home you can afford based on income, debts, and DTI ratios.

Cap Rate Calculator

Calculate a rental property cap rate from NOI and purchase price, with the price implied by your target cap rate.

70% Rule Calculator

Find the maximum offer on a flip using the 70% rule, from ARV, repair costs, and an optional wholesale fee.

DSCR Calculator

Calculate a rental property's debt service coverage ratio (DSCR) and the maximum loan amount a target DSCR allows.

BRRRR Calculator

Model a Buy, Rehab, Rent, Refinance, Repeat deal: refinance proceeds, cash left in the deal, and post-refi cash flow.

Why Investors Use PropCalc

Whether you are evaluating your first rental property, deciding whether to keep renting or buy, or sizing up a flip opportunity, PropCalc gives you the numbers you need in seconds. Every calculator runs locally in your browser — your financial data never leaves your device.

  • No account required — start calculating immediately
  • Instant results — outputs update live as you type
  • Standard formulas — the same calculations used by professionals
  • Mobile-friendly — works on any device

Real Estate Calculator FAQs

Are these calculators free to use?

Yes. All PropCalc calculators are completely free with no sign-up required. Run unlimited calculations.

How accurate are the results?

The formulas use standard industry calculations. Results are estimates — always consult a financial professional and lender for final decisions.

Do you store my data?

No. All calculations run entirely in your browser. No data is sent to any server.

Can I use these on my phone?

Absolutely. All calculators are fully responsive and work great on mobile, tablet, and desktop.