Free Real Estate Investor Calculators
Run the numbers before you buy. DSCR, cap rate, cash-on-cash and more — accurate, transparent, and 100% in your browser. Nothing uploaded.
Open the DSCR calculator →Calculators
InvestCalc is a set of free real estate investor calculators that run entirely in your browser. There is no sign-up, no paywall, and nothing is uploaded — your purchase price, loan terms and rent figures stay on your device.
Each calculator targets one number investors actually need before a deal: debt service coverage ratio, and (coming soon) cap rate, cash-on-cash return, the 50% rule, and more.
Why these calculators are private by default
A spreadsheet or most “free” online calculators send your deal numbers to a server. InvestCalc does not — every formula is evaluated locally in the browser, which you can confirm by watching the network tab while you type. That matters for investors who don’t want their pipeline, offers or finances logged by a third party.
Who these calculators are for
Independent landlords sizing up a single rental, DSCR-loan buyers who need to know the property qualifies on its own cash flow, and agents or newer investors sanity-checking a deal before running it by a lender. The math is transparent and each result explains the inputs behind it.
Frequently asked questions
Are these real estate calculators free?
Yes — every calculator is free with no account, no sign-up and no upload. There is nothing to install.
Do you store or upload my numbers?
No. All math runs locally in your browser. Your purchase price, loan terms and rent figures never leave your device — confirm it in your browser’s network tab while editing the inputs.
Which calculators are available?
The DSCR loan calculator is live now. Cap rate, cash-on-cash return, the 50% rule and rent-vs-own are on the way — each one is added as a dedicated page tuned to the question it answers.