Real Estate Investor Toolkit
Run the numbers before you make the offer.
Fast, free, no-signup calculators built for buy-and-hold landlords, flippers, and BRRRR investors. Plug in the deal, get the metrics that actually decide it.
Featured tool
Try the cap rate calculator right here — edit the numbers and the result panel updates as you go. Open the full page for the worked example and FAQ.
The calculators
Each one is instant and works entirely in your browser — nothing is stored or sent anywhere.
Cap Rate Calculator
Net operating income ÷ price. The fastest read on whether a rental is priced right.
Open calculator ReturnsCash-on-Cash Calculator
Annual cash flow vs. the cash you actually put in — the number that matters with a loan.
Open calculator ReturnsRental Property ROI
Cash flow, cap rate, cash-on-cash, and first-year total return in one view.
Open calculator Screening1% Rule Calculator
Does the rent clear 1% of the all-in cost? The five-second deal filter.
Open calculator Short-termAirbnb / STR Calculator
Monthly cash flow and annual revenue from nightly rate and occupancy.
Open calculator StrategyBRRRR Calculator
Buy, rehab, rent, refinance, repeat — model the full cycle and the cash left in the deal.
Open calculator FlippingFix & Flip Calculator
Net flip profit and ROI after rehab, holding, financing, and selling costs.
Open calculator Flipping70% Rule Calculator
Maximum allowable offer for a flip, from ARV and repair costs. Don't overpay.
Open calculator FinancingDSCR Calculator
Debt service coverage ratio for investor financing without tax returns.
Open calculator FinancingHard Money Loan
Interest-only payment, points, and the all-in cost of short-term financing.
Open calculator FinancingMortgage Recast Calculator
See your new payment and monthly savings after a lump-sum principal paydown.
Open calculator FinancingReverse Mortgage
Estimate the proceeds a HECM could free from your home equity.
Open calculatorWhy investors use Ledgerstone
Most deals die — or should — on a single screen of math. Ledgerstone gives you that math instantly, with the same formulas lenders, appraisers, and seasoned investors use. No accounts, no upsells, no spreadsheets to maintain.
- Instant & private: everything runs in your browser. Your numbers never leave your device.
- Built for US investors: dollar figures, standard amortization, and conventions that match how American deals are written.
- Honest defaults: we pre-fill realistic example numbers so you can see how each tool behaves, then replace them with your deal.