The Universal Calculation Engine
The Universal Calculation Engine
Real Estate Calculators

Use these calculators for deal screening, analysis, and property management. Deal Screening & Offers covers deal finder, 70% rule, fix & flip, wholesaling, and investor mortgage. Analyze & Execute includes rental property, rehab estimator, BRRRR, and Airbnb. Compare & Exit helps with deal comparison and sell vs keep. Property Management Suite covers rent pricing, lease profitability, vacancy risk, expense benchmark, and portfolio analyzer. Financing includes loans and home affordability. Quick Metrics & Calculators includes rent vs buy, cap rate, cash flow, cash-on-cash, DSCR, house flip, down payment, closing cost, and price per sq ft. Search or pick a category below to start.

Tools by category

Deal Finder Mode
Enter price, rent, and rehab → Calciverse tells you: BUY, NEGOTIATE LOWER, or PASS
70% Rule
ARV, repairs, profit and costs → maximum allowable, safe, aggressive, and danger offers
Fix & Flip Calculator
Purchase, rehab, ARV, costs, and loan terms → net profit, ROI, offer guidance, and risk
Wholesaling Calculator
ARV, repairs, assignment fee, and buyer profit target → max offer to seller and deal quality
Mortgage Calculator
Investor‑focused mortgage with extra payments and refinance simulation
Rehab Estimator
Cost per sq ft + detailed line items → total rehab cost and warnings
BRRRR Calculator
Buy, Rehab, Rent, Refinance, Repeat → cash left in, cash out, and infinite return detection
Rental Property Calculator
Full analysis: cash flow, CoC, cap rate, IRR, wealth creation, break-even rent, and deal score.
Purchase
Operating Expenses (annual)
Income
Hold & Sell
Wealth Growth
Cash Flow by Year
Expense Breakdown
Airbnb Calculator
Nightly rate, occupancy, and costs → cash flow, CoC, cap rate, and minimum profitable nightly rate
Cap Rate
Capitalization rate: NOI ÷ purchase price
Cash Flow
Monthly income minus expenses and debt service
Cash-on-Cash Return
Annual cash flow ÷ total cash invested

Cash-on-cash Return Calculator

Quick answer

CoC = annual pre-tax cash after debt service ÷ total cash invested. Leverage lifts CoC when rent is stable—but the same loan amplifies pain when rent dips. If CoC looks great only because you left reserves out of the denominator, fix the denominator.

For a related estimate, see Rental Cash Flow Calculator.

Explore further: Airbnb Calculator · Brrrr Calculator

Formula

Cash-on-cash return ≈ (NOI − annual debt service) ÷ cash invested. NOI excludes financing; debt service includes P&I (and escrow if paid with the loan). Excluded: loan proceeds not yet deployed, paper returns, and principal paydown (equity accrual, not cash income).

Explore further: Price Per Square Foot Calculator

Cash-on-cash is pre-tax cash remaining after debt service, divided by cash you wired in—down payment, closing, rehab out of pocket, and real reserves if you count them as invested. Use it to compare two levered deals on the same footing; pair with cap rate so you see unlevered yield and levered equity yield together.

How to use this calculator

  • Use one definition of “cash in”: Partners, earn-outs, and seller credits blur what you actually risk—align with what left your bank account.
  • Label pre-tax clearly: Depreciation can make taxable income look better or worse than cash—CoC is a cash story unless you say otherwise.
  • Recompute after refi: Cash-out increases equity in the denominator if proceeds sit in the account; if you redeploy, it is a different investment.

High CoC can hide skinny reserves

A 20% CoC that dies on one month of vacancy was never 20%—it was borrowed timing luck.

Real-world examples

  • Case study: two exits: Deal A: $11,400 cash after debt on $76,000 in → ~15% CoC. Deal B: $15,000 on $125,000 → 12%—more dollars, lower percentage. If A needs heavy management and B is passive, the “lower” CoC may buy better sleep; if A is thin on capex, the headline is fake.
  • Cash-out refi: You pull $40k cash but leave it in checking—denominator rises, cash flow unchanged → CoC falls even though operations did not improve. Decide whether that cash is still “in” the deal or funding something else.

What to decide

If CoC beats your cost of capital (including your best alternative use of that cash) with room for a vacancy quarter, leverage is doing its job. If it only works at peak rent, you are levered beta on a thin margin—stress DSCR and downside rent before you celebrate.

FAQ

What counts as cash invested?

Down payment, closing, rehab out of pocket, and any reserves you actually deploy—exclude hypothetical future draws unless you model them.

Why can cash-on-cash differ from cap rate?

Cap rate is unlevered (NOI ÷ price); cash-on-cash is after debt service divided by equity—leverage magnifies or crushes the percentage.

Pre-tax or after-tax?

Most back-of-napkin CoC is pre-tax; after-tax depends on depreciation, your bracket, and exit—label which you mean.

Is a high CoC always the goal?

Not if it comes from razor-thin reserves or fantasy rent—sustainable CoC beats a heroic number that breaks on the first vacancy.

DSCR
Debt service coverage ratio: NOI ÷ annual debt service
Sell vs Keep
Compare wealth if you sell now vs keep renting, with appreciation and loan paydown
Deal Comparison & Dashboards
Compare saved rental and flip scenarios side by side
Scenarios come from Rental Property Calculator, Fix & Flip Calculator, BRRRR, Airbnb, and other Real Estate tools that save deals.
Rent Pricing Intelligence
Required rent for break-even, 8% or 10% cash-on-cash, and market risk.
Property & Financing
Operating Expenses (annual $)
Lease Profitability Simulator
10-year projection with rent escalation and expense growth.
Vacancy Risk Calculator
True vacancy cost and risk-adjusted return.
Property Expense Benchmark
Compare your ratios: maintenance, CapEx, tax, insurance → Healthy / Risky / Overleveraged
Portfolio Analyzer
Aggregate 2–20 properties: total return, DSCR, leverage, net worth impact
Properties (add up to 20)

Enter at least 2 properties. Leave value/debt at 0 if unknown; portfolio return uses cash flow only.

Loan & Mortgage
Big financial decisions — conventional, FHA & VA loans with taxes, insurance, PMI/MIP, payoff, refinance and APR views.
1) Property & Loan Basics
2) Program-specific
Conventional: PMI
3) Closing Costs & Cash-to-Close
4) Monthly Ownership Costs
5) Payment Strategy
6) Scenario Settings

Show amounts as:
A) Real Monthly Cost

Payment breakdown
B) Program Cost Impact

C) Cash to Close

D) Loan Summary & Payoff

E) Amortization & Milestones

F) Extra Payments & Biweekly

G) Equity Projection

Chart
Balance & payments over time
Formula: PMT = P × (r(1+r)^n) / ((1+r)^n − 1); r = annual rate/12, n = months
Home & Rent Affordability
Big financial decisions — how much house or rent you can afford: income and debt → max home price or max monthly rent. Combines house affordability, rent affordability, and DTI.
Affordability type
Income & debt
Loan & costs
DTI rule
Reverse: target home price
Comparison
Price tiers
Monthly payment at max price
Required income (target price)
Financial health
Approval strength
Lifestyle impact
Down payment
Income comparison
Budget breakdown
Home Equity & HELOC
Big financial decisions — available equity, Home Equity Loan vs HELOC comparison, costs over time, stress tests, and a clear recommendation.
Your home
Home Equity Loan
HELOC
Best loan payment plan
HELOC draw & repayment
Total cost over time
Net cash & equity
Payment stress test
HELOC sensitivity
Equity vs loan balance
Payment timeline
Recommendation

Rent vs Buy Analyzer

Compare the true financial impact of renting versus buying over time, including ownership costs, investing opportunity cost, and break-even timing.

Timing

Analysis exit sets the year for the main result (verdict, costs, thresholds). Leave blank to use the chart range. Charts/tables can extend farther than that year. Planned stay is only for the early-exit stress case when it is shorter than your analysis exit.

Home purchase

Financing

Ownership costs

Recurring costs are annualized in the model. Moving costs are one-time transaction costs at entry and exit.

Rent assumptions

Tax & investing

Tax savings are a simplified marginal-rate approximation on deductible mortgage interest and property tax. Not a full tax return; use toggles to reflect itemizing vs standard deduction.

Advanced options

Financing details

Ownership, moves & downside

Modeled once after the first month. The Downside scenario uses at least 10% if this stays at 0.

Rent-side options

Subjective: extra you value renting’s flexibility — not a landlord invoice. It increases modeled rent-side cost.

Tax & deduction details

Deductions use a simplified marginal-rate estimate; bracket phase-outs, AMT, and full return interactions are not modeled. Use toggles as directional guidance.

Presets fill the return fields as an assumption shortcut—not a back-tested portfolio.

Scenarios & risk

Adjust how much conservative vs optimistic scenarios move appreciation, rent growth, and investment return relative to your base inputs.

House Flipping Profit
Purchase, repair, sell price, and costs → profit and ROI.
Down Payment
Purchase price and down % → down payment amount.
Closing Cost
Estimate closing costs from purchase price or loan amount.
Price per Square Foot
Price and square footage → $/sq ft (or enter $/sq ft to get price).
1031 Exchange Calculator
Estimate tax-deferred exchange: relinquished and replacement property, boot, and deferred gain.
Relinquished property (sold)
Replacement property (bought)

Hundreds of fast, free calculators, converters, and practical tools for work and everyday life

A universe of useful calculators and tools

Explore hundreds of free calculators, converters, and practical utilities for finance, real estate, business, math, engineering, text, and development — all in one clean experience.

0Total Calculators & Tools
0Categories

Free to use

No paywall to access core tools

Clean by design

Fast, focused, distraction-light interface

Broad coverage

Math, money, property, text, code, and more

Always growing

New tools are added regularly

Copied