Best Free House Flipping Calculators in 2026 (Tested & Compared)
Quick answer: If you just want the short version — BiggerPockets’ Flip Analysis tool is a solid all-around pick if you want your numbers tied into a bigger investor community, First Class Flipping’s Rehab Budget Calculator is the most thorough free option for nailing down renovation costs, New Silver’s ARV Calculator is worth using to sanity-check your after-repair value with real comps, and First Class Flipping’s Fix and Flip Profit Calculator is the one to reach for once you’re financing the deal with hard money. Keep reading for the full breakdown of all four.
Every flipper has a version of this story. You walk a property, fall in love with the bones of it, and start doing math in your head before you’ve even left the driveway. Fifteen grand for the kitchen, maybe ten for flooring, a new roof if you’re unlucky… and somehow the numbers always land exactly where you want them to. That’s not math. That’s wishful thinking wearing a calculator’s clothes.
A real flip calculator doesn’t care what you want the number to be. It just does the math — purchase price, rehab, holding costs, financing, resale — and tells you whether the deal actually works. The good news is you don’t need to pay for one. There are several solid free options out there. The bad news is they’re not all built the same, and picking the wrong one can leave you missing a cost category that quietly eats your profit.
We tested and compared four of the most useful free house flipping calculators available right now — two built specifically for the flip lifecycle by First Class Flipping (that’s us — full disclosure lower down), and two other well-regarded tools worth knowing about.
How We Compared These
We looked at four things for each calculator: whether the underlying formulas actually hold up (not just a rough guess dressed up in a nice interface), whether it accounts for financing and holding costs or just the obvious purchase-and-sale numbers, how easy it is for someone doing their first or second deal to actually use it without a tutorial, and whether “free” really means free — no email wall, no forced upsell before you see a result.
Quick Comparison
| Calculator | Best For | Cost | Handles Financing? |
|---|---|---|---|
| BiggerPockets Flip Analysis | Investors who want a report tied to a larger community | Free tier available | Yes |
| Rehab Budget Calculator | Estimating renovation costs before you’re locked in | Free | N/A |
| New Silver ARV Calculator | Estimating after-repair value using comps | Free | N/A |
| Fix and Flip Profit Calculator | Flips financed with hard money | Free | Yes |
The Breakdown
BiggerPockets Flip Analysis
Best for: Investors who want their numbers tied into a bigger community and forum.
BiggerPockets built its flip analysis tool as part of a broader membership platform, and that’s really the appeal here — it’s less about the calculator itself and more about being one piece of a larger ecosystem with forums, deal-sharing, and other investors comparing notes. The free tier gets you a solid report; some of the deeper features sit behind their paid membership.
Rehab Budget Calculator
Best for: Getting your renovation number right before it becomes a problem.
Most flips don’t fail because of the purchase price. They fail because the rehab budget was a guess, and guesses have a way of running 20-30% over. This calculator breaks renovation costs down by category — materials, labor, permits — instead of asking you to throw out one lump-sum number and hope. It won’t do the walkthrough for you, but it forces the kind of line-item thinking that actually catches the costs people forget, like permit fees or a contingency buffer.
Try the Rehab Budget Calculator
New Silver ARV Calculator
Best for: Pinning down after-repair value using actual comps.
ARV is the number every other calculation depends on, and it’s also the easiest one to get wrong if you’re eyeballing it. New Silver’s tool leans on comparable sales data to sanity-check your estimate rather than asking you to guess based on the listing photos alone. It’s a narrower tool than the others on this list — it does one job — but it does that job well.
Fix and Flip Profit Calculator
Best for: Deals financed with hard money.
Hard money changes the math on a flip more than people expect going in. It’s not just the interest rate — it’s points, it’s the carrying cost of every extra month the project runs long. This calculator is built around that reality specifically, letting you model loan-to-value, lender points, and monthly interest so you can see your real profit after financing costs, not just the profit that looks good on paper before the loan terms get factored in.
Try the Fix and Flip Profit Calculator
Full transparency, since half of these picks are our own tools: First Class Flipping is our company, so take those two with the appropriate grain of salt. We built these calculators because we use them ourselves on our own deals — but you should still run the numbers on any calculator you trust before you write an offer.
Common Questions
Are there any free house flipping calculators?
Yes — several solid ones, in fact. Both First Class Flipping calculators covered above are free to use with no email gate, and BiggerPockets offers a free tier on its flip analysis tool as well. You generally don’t need to pay for a calculator to get a usable answer.
How accurate are free flip calculators?
As accurate as the numbers you put into them. A calculator can’t know your rehab is going to run over budget or that your contractor is going to disappear for three weeks — it can only do the math on the inputs you give it. The real value is in forcing you to account for every cost category (holding costs, financing, closing costs) instead of skipping the ones that are easy to forget.
What’s the difference between a MAO calculator and a full flip calculator?
A MAO (maximum allowable offer) calculator answers one question — what’s the most you should pay — using ARV, rehab costs, and your target profit margin. A full flip calculator, like our Fix and Flip Profit Calculator, goes further and models the entire deal from purchase through resale, including financing costs, holding time, and realtor commissions on the back end. Start with a MAO calculator when you’re evaluating whether to make an offer; move to a full calculator once you’re seriously underwriting the deal.
Can I use these calculators for wholesaling too?
Partly. Wholesaling relies on similar front-end math — figuring out a purchase price ceiling — even though you’re assigning the contract rather than renovating the property yourself. A rehab-to-resale calculator like the ones above won’t map perfectly onto a wholesale deal, so if wholesaling is your main strategy, you’ll want a calculator built specifically around Maximum Allowable Offer instead. Once you’ve got that number, you still need someone to assign the contract to — our guide on finding cash buyers for wholesale deals covers that side of it.
Whichever calculator you start with, the goal is the same: know your numbers before you’re emotionally invested in a property, not after. If none of the four above match exactly what you’re analyzing, First Class Flipping’s full calculator library has a few more tools worth a look.
