For real estate investors
Run the numbers on any deal in under 60 seconds
A growing suite of fast, free calculators for rentals and flips. No signup, no spreadsheets — everything runs in your browser.
DSCR Loan Calculator
Size the loan a rental supports, its monthly PITIA, the DSCR, and your cash to close.
Open calculator →Fix & Flip Calculator
Run the 70% rule for your max offer, model hard-money costs, and see projected profit and ROI.
Open calculator →Rental ROI Calculator
Cap rate, cash-on-cash return, and monthly cash flow for any buy-and-hold rental.
Open calculator →BRRRR Calculator
Model buy, rehab, rent, refinance — and see the cash you leave in the deal after the refi.
Open calculator →Free · Runs entirely in your browser · Nothing is saved or sent
Free calculators for real estate investors
Sizing up a deal usually means wrestling with a spreadsheet. These free tools do the math for you: enter a property’s numbers and instantly see the financing it supports, the returns it produces, and whether it clears the rules of thumb investors actually use. Everything runs in your browser — no signup, no spreadsheets, and nothing about your deal leaves your device.
Who these tools are for
Whether you’re buying your first rental, scaling a buy-and-hold portfolio, flipping houses, or running the BRRRR strategy, the goal is the same: know a deal’s numbers before you make an offer. These calculators are built for landlords, flippers, wholesalers, and agents who want a fast, honest read on a property in under a minute — and for self-employed buyers exploring DSCR financing that qualifies on rental income instead of tax returns.
Pick your calculator
- DSCR Loan Calculator — size the loan a rental supports, its PITIA, the debt service coverage ratio, and your cash to close.
- Rental ROI Calculator — cap rate, cash-on-cash return, monthly cash flow, and NOI for any buy-and-hold rental.
- Fix & Flip Calculator — the 70% rule for your max offer, hard-money costs, and projected profit and ROI.
- BRRRR Calculator — model buy, rehab, rent, and refinance to see the cash you recover and the cash left in the deal.
New to the strategies behind these numbers? Our real estate investing blog breaks down DSCR loans, the 70% rule, the BRRRR method, and more — with worked examples you can run in the calculators above.
Frequently asked questions
Are these calculators really free?+
Yes. Every calculator is free and runs entirely in your browser — no signup, no paywall, and nothing about your deal is sent to a server. Optional free accounts add saved scenarios and AI deal analysis, but the calculators work fully without one.
Do I need to create an account?+
No. You can run unlimited deals without signing in. An optional free account lets you save scenarios, compare them side by side, and reopen a deal on any device. Everything the calculators compute is available without an account.
Which calculator should I use?+
Use the DSCR Loan Calculator to size a rental loan and check it qualifies, the Rental ROI Calculator for cap rate and cash flow on a buy-and-hold, the Fix & Flip Calculator for the 70% rule and projected flip profit, and the BRRRR Calculator to model a buy-rehab-rent-refinance and see the cash left in the deal.
How accurate are the results?+
The math is exact and unit-tested, but the outputs are only as good as your inputs. Treat them as fast, educational estimates for screening deals — not a quote or a commitment to lend. Rates, taxes, insurance, and lender terms vary, so confirm the numbers with your lender before you commit.
Can I save or share a deal?+
Yes. Every calculator can copy a shareable link with the entire deal encoded in the URL — open it on any device to restore the exact inputs, no account needed. You can also export a clean one-page PDF, or save the scenario to a free account.
Estimates are for educational purposes only and are not financial advice, a quote, or a commitment to lend. Loan programs, rates, taxes, insurance, and return assumptions vary by lender, property, and market.