Free tools
Free calculators and templates for landlords.
Quick, honest tools for the math a landlord actually does — cap rate, cash-on-cash, depreciation, and a rent roll to track it all. They're free, they need no signup, and the calculator results are shareable by link.
Cap rate calculator
Net operating income and the unlevered yield from price, rent, and expenses.
OpenCash-on-cash return calculator
Your real annual return on the cash you put in, with the mortgage figured for you.
OpenRental depreciation calculator
27.5-year straight-line with the MACRS mid-month convention for Schedule E line 18.
OpenRent roll template
A clean CSV with the nine columns that matter, plus example rows. Downloads instantly.
Open
These run one property at a time. resty.ai runs all of them across your whole portfolio, on your real numbers, and keeps them current — so you never have to copy a figure into a calculator again.