Real estate calculators for investors.
The same metrics Keystone IQ tracks for your whole portfolio. Free, no signup, no email required. Use them to run individual deals or to brush up on the math.
Start here
Returns & screening
Cap Rate Calculator
Annual NOI divided by property value. The fastest single number for comparing two rental properties.
Open calculatorCash-on-Cash Return Calculator
Annual cash flow divided by the cash you actually invested. The after-mortgage return that tells you whether a specific deal is worth your money.
Open calculator1% Rule Calculator
The 30-second screen: does the monthly rent clear 1% of the price? A fast filter for which deals are worth a full analysis.
Open calculatorFinancing
Rental Property Mortgage Calculator
See your monthly payment, total interest, and a full amortization chart. It shows the exact month your principal finally overtakes the interest.
Open calculatorDSCR Calculator
Lenders check one number before approving your loan: DSCR, or net operating income divided by annual debt service.
Open calculatorBy strategy
BRRRR Calculator
Buy, Rehab, Rent, Refinance, Repeat. See how much of your cash the refinance pulls back out, and how much stays trapped in the deal.
Open calculatorAirbnb / Short-Term Rental Calculator
Turn ADR and occupancy into gross revenue, NOI, RevPAR, and a short-term cap rate. It also covers the Schedule E vs. C and §280A angles that long-term tools miss.
Open calculatorRun these numbers on every rental you own.
Keystone IQ works them out from your real income and expenses, and keeps them current.
On the way
More calculators coming
A 1031 exchange calculator and a rental depreciation calculator are next.