Built for serious investors.

12+ real estate calculators that update as you type, plus Ask Crunch, an AI assistant for your real estate questions. No spreadsheets required.

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Crunchly

REAL ESTATE INTELLIGENCE

Ask Crunch

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Core Calculators

Cash Flow

Cap Rate & ROI

Cash-on-Cash Return

ROI Calculator

Rental Yield

Mortgage

Strategy

BRRRR

DSCR

Vacancy / Sensitivity

Rental Property Analyzer

Fix & Flip

Flip vs Rent

All calculations are estimates. Consult a financial advisor before investing.

Rental Cash Flow

Analyze monthly income, expenses, and returns on a rental property

MONTHLY CASH FLOW

+$1,248

Strong positive flow

ANNUAL CASH FLOW

+$14,976

CASH-ON-CASH RETURN

11.52%

CAP RATE

8.78%

Above avg

COST PER UNIT

$156,250

CASH FLOW / UNIT

+$312

Purchase & Financing Paid in Cash

Purchase Price ($)

625,000

Down Payment (%)

Interest Rate (%)

7.0

Loan Term (yrs)

Closing Costs ($)

5,000

Number of Units

Income

Monthly Rent ($)

6,750

Vacancy Rate (%)

Monthly Breakdown

Gross Rent$6,750

Vacancy Loss−$338

Effective Rent$6,413

Mortgage (P&I)−$3,327

Tax + Insurance−$650

Repairs + CapEx−$675

Mgmt + Other−$513

Net Cash Flow+$1,248

Strong cash flow

The Engine

Numbers move the moment you do.

No Calculate button. Type a purchase price and your cash flow, cap rate, ROI, and cash-on-cash return update as you type.

Change an input — interest rate, down payment, vacancy — and every result on the page recalculates right in your browser.

Results recalculate as you type
Linked sliders and inputs for testing different assumptions
Copy one deal into every calculator in your plan with a single click

Ask Crunch

Ask Crunch explains your numbers.

Ask about the metrics in your calculator or any real estate term and get educational answers in plain English. Ask Crunch provides general information only — not financial, investment, legal, or tax advice.

AI Assistant

Crunchly AI

Ask Crunch uses Anthropic's Claude AI model with instructions focused on real estate education. When you ask, it can reference the inputs and results in the calculator you're viewing.

Topics Only

Claude

Pro+

Plans

Example conversation

You: How would a lower interest rate change my numbers?

🐰🥕 Crunch: On this $500k loan, dropping the rate from 7.0% to 6.5% lowers the monthly payment by about $166. With your other inputs unchanged, monthly cash flow would go from +$237 to +$403.

🐰🥕 Crunch: Cap rate stays the same, since the interest rate doesn’t affect NOI. Cash-on-cash return would go from 2.3% to 3.9%. These are estimates based on your inputs, not a recommendation.

Can reference the calculator you’re viewing
Explains real estate terms and metrics
Educational information only — not advice

The Models

12+ calculators. One platform.

Each one uses standard real estate formulas. Copy a deal’s inputs from one calculator to another to see it from different angles.

Rental Property Analyzer

A letter grade showing how your numbers compare to 8 common benchmarks.

Cap Rate

NOI ÷ purchase price

Cash Flow

Monthly income after mortgage, taxes, insurance, and expenses.

BRRRR

Buy · Rehab · Rent · Refi · Repeat

Fix & Flip

ARV, holding costs, profit margin

The Score

Eight benchmarks. One grade.

Monthly cash flow. Cash-on-cash return. Cap rate. DSCR. 1% rule. 50% rule. Gross rent multiplier. Break-even occupancy. The Rental Property Analyzer checks your numbers against all eight and summarizes the results as a single letter grade.

Every grade comes with a full breakdown showing which benchmarks your numbers meet and which they miss. Adjust your assumptions and watch the grade update. The grade describes your inputs — it isn’t a recommendation to buy or sell.

Common industry benchmark thresholds
Full breakdown of every benchmark
Color-coded scorecard that’s easy to scan

Try the Rental Property Analyzer

crunchly.io — Rental Property Analyzer

Crunchly isn't just a calculator. It's a real estate intelligence platform.

The Speed

Built to keep up with you.

Calculations run right in your browser, so results update as you type without waiting on a server.

Save your deals to your account and pick up where you left off on desktop, tablet, or phone.

Calculations run in your browser
Works on desktop, tablet, and phone
Saved scenarios on paid plans

crunchly.io — Mortgage Calculator

The Privacy

Your numbers stay yours.

Your data is encrypted in transit and at rest. We don’t sell your personal information. You can export your data or delete your account from your settings. See our Privacy Policy for how your data is handled, including the service providers that help run Crunchly.

Encrypted in transit & at rest

We don’t sell your data

Export & delete from settings

Start crunching.

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