About FreePropertyCalc
Free, professional-grade real estate calculators built for homebuyers and investors who want honest math, not optimistic projections.
Operated by KRG Investment · Last reviewed August 28, 2026
Why It Exists
Real estate decisions are frequently made with incomplete math, unclear assumptions, and spreadsheets that don't reflect reality. FreePropertyCalc was built to fix that by providing:
- Practical assumptions — vacancy, maintenance, and reserves so you don't overestimate returns.
- Clear explanations — for what each number means and how to interpret the output.
- Mobile-first design — so you can run the numbers in seconds, anywhere deals happen.
Who It Helps
Homebuyers
Compare rent vs buy, estimate ownership costs, and plan affordability before committing to a mortgage.
Rental Investors
Underwrite rentals with NOI, cap rate, cash flow, and realistic reserves using industry-standard formulas.
Wholesalers
Estimate MAO quickly using ARV, repairs, and end-buyer margin to find a defensible offer price.
Anyone Learning
Understand the fundamentals with plain-English guides, worked examples, and step-by-step FAQs.
Editorial Team
Articles shown in the public Blog have passed an editorial review for originality, practical usefulness, and consistency with our calculators. Material awaiting a deeper accuracy or sourcing review is excluded from search indexing and advertising.
Real estate investor and software engineer with hands-on experience in rental property underwriting, fix-and-flip analysis, and the BRRRR strategy. Built FreePropertyCalc to give everyday investors the same tools used by professional underwriters.
Former mortgage loan officer with 8 years of experience in conventional and FHA lending. Reviews all homebuyer-focused guides and calculator logic for accuracy against current underwriting standards.
Real estate investor and property manager with a portfolio of residential rentals. Reviews investment-focused content including cap rate analysis, BRRRR deals, and multifamily underwriting guides.
Disclaimer: This site provides estimates for educational purposes only. Nothing on FreePropertyCalc is financial, legal, or tax advice. Always consult licensed professionals before making real estate decisions.
Our Methodology
- Calculator formulas are documented in plain language and checked against standard real estate finance definitions.
- Default assumptions are editable scenarios, not appraisals, quotes, or claims about a specific property.
- Location pages are indexed only after they receive distinct, hand-reviewed local context; adding a city to the tool does not automatically create a search page.
- Outputs are estimates, and users are prompted to replace every default with current property, lender, insurer, and local-government information.
Editorial Standards
Each published article must answer a distinct reader question, add practical analysis or worked examples, use consistent calculator terminology, and avoid unsupported certainty. Tax, legal, lending, and market claims are qualified and should point readers toward an appropriate primary source or licensed professional.
AI may help prepare an unpublished draft, but generated text is never published automatically. A human review is required before an article can appear in the Blog, sitemap, search index, or on a page carrying advertising.
Review dates describe the most recent editorial check; they do not mean every market figure updates in real time. Material that no longer meets the standard is removed from the public index until it is corrected, merged, or retired.
Sources & Corrections
We prefer primary sources such as county assessor records, state housing and licensing agencies, HUD Fair Market Rent data, FHFA house-price data, Census data, IRS publications, and official lender guidance. Local rules and prices can change between reviews, so users should confirm current information for the property and jurisdiction they are evaluating.
If you find an error, unsupported claim, or outdated assumption, please send a correction. We review correction requests and remove affected content from the approved index when a material issue cannot be resolved promptly.
How We're Different
Frequently Asked Questions
Is FreePropertyCalc really free?
Yes — 100% free. All calculators and guides are freely accessible with no sign-up, email, or payment required. The site is supported by advertising.
Who should use these calculators?
Anyone making real estate decisions: first-time homebuyers, rental property investors, house flippers, and wholesalers. Our tools are designed for both beginners and experienced investors.
Is this financial advice?
No. All content and calculator outputs are for educational and informational purposes only. Always consult a qualified professional — real estate agent, lender, CPA, or attorney — before making financial decisions.
How do you decide on default values?
We research typical market ranges and intentionally set defaults on the conservative side. For example, we default to 8% vacancy, 10% maintenance, and 5% CapEx reserves so your first-look numbers don't overstate returns. You can always adjust these to match your specific deal.