Quick take
STR Numbers is a free STR calculator for the first pass on a deal. Use it for purchase price, financing, income, expenses, ROI, cap rate, and break-even occupancy. Use market data or pricing software when you need comps, demand signals, or daily rate automation.
Use STR Numbers for
- Checking whether one property works before you spend more time on it
- Choosing the right calculator for a specific job: Airbnb, VRBO, DSCR, furnishing, arbitrage, or co-hosting
- Seeing the core cash-flow math without building a spreadsheet
- Giving a partner, lender, realtor, or co-host a simple starting point
Use other STR tools for
- Pulling market comps, ADR, occupancy, and demand data
- Managing dynamic nightly pricing after a listing is live
- Searching many markets or for-sale properties at once
- Running a fully custom model with your own spreadsheet logic
Run the numbers first
Start with the main calculator for cash flow, ROI, cap rate, and break-even occupancy.
STR Numbers vs other STR calculators
This is not about crowning a winner. Pick the tool based on the question you are trying to answer.
Primary job
Run free deal math for a specific STR property.
Varies by tool: market data, pricing automation, property search, or custom spreadsheet modeling.
Best first question
Which calculator answers my question fastest?
Which platform has the data I need next?
Inputs
Purchase price, financing, nightly rate, occupancy, fees, and operating expenses.
May use market data, listing data, pricing rules, custom formulas, or portfolio inputs.
Outputs
Cash flow, cash-on-cash return, cap rate, break-even occupancy, and setup estimates.
Depends on the product: comps, forecasts, pricing recommendations, or custom reports.
Cost posture
Free calculators for the first pass.
Can be free, paid, or limited by plan depending on the tool.
Main limitation
Does not replace market comps, live pricing tools, or custom portfolio software.
May still need conservative expense and financing assumptions.
How I would use them
Start with Deal Analyzer for purchase underwriting
If you have a property and want to know whether the numbers work, start with the Deal Analyzer. It handles the core cash-flow, ROI, cap-rate, and break-even math.
Use the VRBO Calculator when platform fees or stay patterns matter
If the property is likely to perform as a whole-home vacation rental, the VRBO Calculator starts with VRBO-style assumptions that you can adjust.
Layer in specialized tools when the question changes
Use market data when revenue is uncertain, pricing tools when the listing is live, and DSCR or furnishing calculators when financing or setup cost is the next bottleneck.
Quick note
This page helps you choose a calculator. It does not claim that STR Numbers is better than every spreadsheet, data platform, or pricing tool.