Free Rental Property Calculators
Calculate cash flow, cap rate, and cash-on-cash return for any rental property — instantly, free, and private.
No sign-up, no tracking, no data uploadedInvestment Calculators
Rental Cash Flow Calculator
Enter rent, vacancy, expenses and mortgage to see monthly and annual net income for any rental property.
Cap Rate Calculator
Calculate capitalization rate for any rental property. Enter price, rent, vacancy and expenses to see cap rate instantly.
Cash-on-Cash Return Calculator
Calculate cash-on-cash return for rental investments. Enter price, down payment, closing costs, rent and mortgage to see your ROI.
Rental Income Calculator
Calculate total rental income for multi-unit properties. Enter rent per unit, vacancy rate and number of units to see annual income.
Gross Rent Multiplier Calculator
Calculate gross rent multiplier (GRM) for rental properties. Enter price and rent to see how quickly rent recoups your investment.
Airbnb Rental Calculator
Calculate income for Airbnb and short-term rentals. Enter nightly rate, occupancy, expenses and mortgage to see net income.
BRRRR Calculator
Calculate BRRRR strategy returns. Enter purchase price, rehab, ARV, rent and mortgage to see equity and cash flow after refinance.
House Hacking Calculator
Calculate net housing cost for house hacking. Enter rent from units, mortgage and expenses to see your effective housing cost.
Rent vs Mortgage Calculator
Compare renting vs buying costs. Enter monthly rent and mortgage payment to see the difference and break-even analysis.
Why RentCalc?
Instant Results
Every calculator runs in real time as you type. No submit buttons, no waiting, no page reloads.
50-State Data
Built-in rent, vacancy, tax rate, and landlord law data for all 50 states — no external lookups needed.
100% Private
Your numbers never leave your browser. No accounts, no cookies, no tracking. Enter sensitive deal data with confidence.
How These Calculators Work
RentCalc gives rental property investors a fast, private way to run the numbers. Every calculator works entirely in your browser — no data is uploaded, no account is required, and no cookies track your inputs. Enter your property details and get instant results using the same formulas real estate professionals rely on.
The cash flow calculator subtracts vacancy, operating expenses and mortgage from gross rent to show what you actually pocket each month. Cap rate divides net operating income by property price to compare investments regardless of financing. Cash-on-cash return goes further by measuring your annual cash flow against the cash you put in — the metric most investors use to judge a deal.
For multi-unit investors, the rental income calculator projects gross income across units with vacancy adjustments. The gross rent multiplier offers a quick screening metric for comparing properties in the same market. Airbnb hosts can estimate short-term rental income with nightly rates and occupancy inputs.
The BRRRR calculator models the buy-rehab-rent-refinance-repeat strategy, showing built equity and post-refinance cash flow. House hackers can see how rental income from other units offsets their mortgage. And the rent-vs-mortgage calculator provides a starting point for the buy-or-rent decision.
Each calculator includes worked examples, state-level market data where relevant, and answers to common questions. We update data periodically to reflect current market conditions. All figures are estimates — always verify with your own due diligence before investing.