Spot a roof.
Get its numbers.
Roof area, pitch and squares for any U.S. address, read from the laser survey of that exact roof. Free here, no sign-up.
Preliminary measurement from public aerial LiDAR · U.S. addresses · No sign-up
Public USGS and NOAA aerial LiDAR · 43 states · 372 city guides
How a roof gets measured from the air
One real roof, three moments. This is what happens in the seconds after you pick an address.
-
Laser returns
Survey aircraft swept the neighborhood with a laser. We keep the returns that landed on this roof.
-
Roof planes
The returns are fitted to flat roof planes. Their tilt is the pitch, measured rather than guessed.
-
Your numbers
2,850 ft² 6/12 pitch 28.5 squares
Plus a material cost range at your state's prices, ready for a phone quote.
Not just reports.
A roofing workspace.
Roofari runs the job from the curb to the signed contract: leads on the map, measurements, material quotes, branded PDFs, client links and routes. One app on the phone in your truck.
- Leads
- Tap any roof, set its status, add photos and a follow-up
- Report
- Area, pitch, waste and squares to order
- Blueprint
- Ridge, hip, valley, eave and rake lengths
- 3D
- Rotate the roof and inspect each facet
- Quotes
- A full material kit priced with your numbers
- Clients
- Branded PDF and a link the homeowner can open
- Routes
- Plan the day's stops and drive them in order
One roof, start to finish
A real Roofari job on a house in Roseville, California: 14 roof facets, 3,589 sq ft. The street address is left out.
Tap the roof
Footprint, a quick roof preview and lead status, right on the map.
Open the full report
Area, pitch, facets and squares to order with your waste.
Every edge measured
Ridges, hips, valleys, eaves and rakes, each with its length.
Turn it in 3D
Rotate the roof and tap any facet to inspect it.
Price the materials
Shingles, underlayment, flashing and nails, priced with your numbers.
Send a branded PDF
Your company and contacts, the roof diagram and a materials estimate.
Free estimate vs. full report
| Free on this site | Roofari app | |
|---|---|---|
| Roof area | Estimate + likely range | Facet by facet |
| Pitch | Predominant | Every facet |
| Squares | Before waste | With suggested waste |
| Ridges, hips, valleys | — | Lengths |
| 3D roof model & editor | — | Included |
| PDF report & client link | — | Included |
What the numbers are, and what they aren’t
Built on public data, with its limits stated plainly.
Data sources & accuracy- Measured, not guessed
- Pitch comes from laser points on the actual roof, not from a photo. Every result names its LiDAR survey year.
- Honest about gaps
- Surveys can be years old and trees can hide a roof. When the data isn’t good enough we say so instead of inventing a number.
- A first estimate
- Right for a phone quote or a bid range. Verify on site before you order material or sign a contract.
Roof measurements in 372 U.S. cities
- New York, NY
- Los Angeles, CA
- Chicago, IL
- Houston, TX
- Phoenix, AZ
- Philadelphia, PA
- San Antonio, TX
- San Diego, CA
- Dallas, TX
- Jacksonville, FL
- Austin, TX
- Fort Worth, TX
- San Jose, CA
- Columbus, OH
- Charlotte, NC
- Indianapolis, IN
- Seattle, WA
- Denver, CO
- Oklahoma City, OK
- Nashville, TN
- Washington, DC
- El Paso, TX
- Las Vegas, NV
- Boston, MA
Questions roofers ask
How do you measure a roof without going on it?
We use airborne LiDAR — laser scans flown over U.S. cities by the USGS 3D Elevation Program, NOAA and state agencies. Each scan records the exact 3D position of millions of points on rooftops. From the points that land on a building we compute the roof’s pitch and area.
How accurate is the free measurement?
The free result is a preliminary estimate: building outline times the measured slope, shown with a likely range. It is meant for a first estimate or a ballpark quote. The full report in the Roofari app reconstructs every roof facet in 3D. Neither replaces an on-site inspection before you order materials.
Is it free?
Yes. The roof area, pitch and squares on this site are free, with no sign-up. The full 3D roof report, PDF export, client links and route planning are in the Roofari iPhone app.
What is a roofing square?
A roofing square is 100 square feet of roof surface. A 2,400 sq ft roof is 24 squares. Material is usually ordered by the square plus a waste allowance for cuts, hips and valleys — typically 10–15% on a simple roof.
Why is my address not covered?
We only measure where public LiDAR exists and has passed our quality checks. Coverage is wide in most U.S. metro areas, but some places have no scan, an old or sparse scan, or a scan we are still validating. Heavy tree cover or a house built after the scan can also prevent a measurement.
Are the material prices a quote?
No. They are typical U.S. material-only prices per square, adjusted to your state’s price level (BEA Regional Price Parities). They exclude labor, tear-off, disposal, delivery and tax. Use your supplier’s prices for an actual bid.
Who is Roofari for?
Roofing contractors, estimators and sales reps who want a first roof estimate before driving to the job — and homeowners who want to understand their roof before getting bids.
Ready for the full roof report?
3D roof model, every facet and edge, material quote and a PDF your client can open, on your iPhone or iPad.
Get Roofari on the App Store