Free roof measurement by address
Enter a US address and confirm the house to measure sloped roof area, roofing squares and pitch per plane from Google Solar aerial roof data. The result includes roof shape and the imagery year when available. We haven't published a roof-area test yet; check measurements on site before ordering.
Updated
Planes
- North, 5/12962 sq ft
- South, 5/12962 sq ft
- East, 5/12210 sq ft
- West, 5/12210 sq ft
Measurements from Google aerial roof data, measured by the same engine Measured Bid prices from. No prices are shown here. Confirm every number on site.
At a glance
| Input | What you get |
|---|---|
| US address and confirmed house | Sloped roof area, squares, pitch per plane, roof type and imagery year |
| Waste allowance by roof type | Squares to order |
What you get from an address
One lookup gives the numbers a roof replacement is priced on. Each plane is numbered on the aerial and listed with its direction, pitch and area.
- Sloped roof area in square feet, with every plane's slope already included.
- Squares of roof (100 square feet each) and an order quantity with a waste allowance.
- Each plane's direction, pitch and area.
- The roof type: gable, hip, shed, low slope or complex.
- The year of the aerial imagery and a confidence level.
MeasuredOur model house
- North-facing plane, 5/12
- 962 sq ft
- South-facing plane, 5/12
- 962 sq ft
- East-facing plane, 5/12
- 210 sq ft
- West-facing plane, 5/12
- 210 sq ft
- Sloped roof area
- 2,344 sq ft
- 2,344 ÷ 100
- 23.4 squares
- With 17% waste for a complex roof
- 27.4 squares
How this measures
- Google Solar roof data derived from aerial imagery supplies each roof plane's area, pitch and direction. The result includes the imagery year when available.
We haven't published a roof-area test yet. Older imagery and incomplete roof coverage can change the result.
Measurement methods and published testsSquares and waste
A square is 100 square feet of roof surface. Order more than you measure to cover cuts, hips, valleys and starter courses.
Measured Bid starts with a waste allowance for each roof type, and you can change each one. On the model house, 23.4 squares becomes 27.4 squares to order.
Need the whole order? The roofing material calculator adds underlayment, ice and water shield, starter, ridge cap, drip edge and nails from the area and the roof's edge lengths.
Starting waste allowance by roof type
| Roof type | Waste |
|---|---|
| Gable | 10% |
| Hip | 15% |
| Complex (several roof sections) | 17% |
| Shed (single slope) | 8% |
| Low slope | 5% |
When the numbers are off
Aerial data is quick and consistent. It can still miss things, so the result tells you when to look harder.
What the aerial can't see
- Changes since the imagery was taken. The result shows the imagery year and warns when it's 5 or more years old.
- Roof sections missing from the data. The result flags a house with less than 90% of its roof mapped.
- Edges hidden under trees or deep shade.
- Layers of old roofing, decking condition and ventilation.
- Confirm roof measurements and material condition on site before ordering.
When a paid report is the better tool
- Insurance work that needs a formal report.
- Complex roofs where you order every material straight from the numbers.
- A quick first price from an address is a different job. Compare with EagleView.
- Report prices from EagleView, GAF QuickMeasure, Roofr, RoofSnap and Hover are side by side in our roof measurement software comparison.
- We haven't published a roof-area test yet. Our gutter footage test is on the accuracy page.
Price this roof with your rates
In Measured Bid you set a price per square for each material, tear-off per layer, waste by roof type, a steep-roof adjustment and a job minimum.
FAQ
How do I measure my roof from an address?
Enter your US address and confirm the house on the aerial. Measured Bid reads sloped roof area and pitch per plane from Google Solar roof data, then converts area to roofing squares. Check measurements on site before ordering.
Can I measure my roof with Google Earth?
Google Earth's ruler can help measure a flat footprint. Roof surface area also needs the pitch of each section. Measured Bid reads sloped area and pitch per plane from Google Solar roof data.
How many squares is my roof?
Divide the sloped roof area in square feet by 100 for roofing squares. Add your waste allowance separately for the material order.
Is there a free EagleView alternative?
Measured Bid is free to try with 5 measurements and no credit card. Accounts receive measurements and a PDF report. EagleView sells paid reports with its own scope and methods; compare report contents for your job.
How big is my roof?
Enter the address and the tool adds up the sloped area of every roof plane. By hand, measure the footprint and multiply it by the pitch multiplier. A 42 by 32 ft gable is a 1,344 sq ft footprint. At 6/12 the multiplier is 1.118, so the roof is about 1,503 sq ft, or 15.0 squares before waste.
Is the roof measurement tool free?
Yes. Measuring from an address needs a free Measured Bid account, with 5 measurements free and no credit card. Measuring the same house again doesn't count toward that limit.
How accurate is it?
Roof area comes from the sloped area of each plane in Google's aerial roof data, so no pitch multiplier is needed. We haven't published a roof-area test yet. Our published test covers gutter footage, and it's on the accuracy page. Confirm the roof on site before you order materials.
Does it replace a measurement report?
For a first estimate, often yes. For insurance work, or when you order materials straight from the numbers on a complex roof, a paid report or an on-site measurement is the better tool.
Can it measure gutters too?
Yes. The gutter calculator uses the same roof data to find the edges that need gutters and counts the downspouts.
Can I put this on my website?
Yes, with your prices. Measured Bid's website price form measures the roof the same way and shows the homeowner a price range built from your rates. The lead comes to you with the measurements attached.
Related pages and tools
Price roofs from an address
Type the address. Your free account measures it, and you can price it with your own rates when you're ready.