Shingles Calculator

Pull roof area from the active project or override it manually when you're pricing a roof from field notes.

Ran the Roof calculator already? Keep Active project selected to reuse that area. Otherwise switch to Manual and type your own square footage.

Chained roof area

Run the roof calculator first to prefill shingles with the active project roof area.

Pick the shingle profile you're installing — this changes the default coverage assumptions.

Roof areasq ftTotal roof area to cover, in square feet.

Know bundles needed per 100 sq ft square? Use Bundles per square. Know how much one bundle covers instead? Use Sq ft per bundle.

Bundles per squarebundlesNumber of bundles that cover one roofing square (100 sq ft). Check the shingle wrapper.Waste percent%Extra material to cover cuts and mistakes. 10% is typical for a simple roof, more for a cut-up roof.

Accessories

Optional — enter eave, rake, and ridge lengths to size starter strip, drip edge, and ridge cap. Underlayment is sized from roof area either way.

Eave lengthoptionalftTotal length along the roof's lower edges (eaves).Rake lengthoptionalftTotal length along the roof's sloped edges (rakes).Ridge lengthoptionalftTotal length along the roof's peak (ridge).Underlayment coverage per rolloptionalsq ftSquare footage one roll of underlayment covers. Check the product label.

You'll need 50 bundles of shingles for 1,500 sq ft of roof.

You'll need

Shingle estimate

Bundles to buy

50 bundles

Adjusted roofing area

16.5 squares

Underlayment

5 rolls

Warnings

INFO No roof area is saved in the active project yet, so the manual area is being used.
INFO Enter eave, rake, and ridge lengths to size starter strip, drip edge, and ridge cap. These are skipped without them.

Detail values

Roof area used: 1,500 sq ft
Squares: 15
Adjusted squares: 16.5

Assumptions

Shingle type: Architectural / dimensional
Coverage input: Bundles per square
Underlayment coverage: 400 sq ft per roll (editable)

Included: roofing material, underlayment, waste allowance.

Not included: labor, delivery, permits, disposal of waste material.

Formula details

Squares: roofArea / 100
Adjusted squares: squares x (1 + wastePercent)
Bundles to buy: ceil(adjustedSquares x bundlesPerSquare)
Drip edge: eaveLength + rakeLength
Underlayment rolls: ceil(adjustedArea / coveragePerRoll)

FAQ

Can I use this without the roof calculator?

Yes. Switch to manual area and enter the square footage directly.

What if my product lists square feet per bundle?

Choose the square-feet-per-bundle mode and CrewMeasure converts the adjusted roof area into bundles to buy.

Should I always add waste?

Usually yes. Waste covers cuts, hips, valleys, and handling losses, but you can set the percentage yourself.

How does metal panel work differently from shingle bundles?

Selecting Metal panel switches the primary quantity to panel count, computed as the adjusted roof area divided by your panel's covered area (editable), rounded up — panels are commonly custom-cut to the rafter length, so this sizes how many panel-widths span the roof rather than a bundle count.

Do I have to enter eave, rake, and ridge length?

No — they're optional. Without them you still get bundles/panels and underlayment (both area-based). Enter them to also size starter strip, drip edge, and ridge cap.

Roof area source