Shingle Estimator

Use roof area or footprint plus pitch to estimate roofing squares and shingle bundles fast before you place the order.

Built for contractors who need a fast bundle count without opening the full material workflow first.

Not sure whether this job should use 10%, 15%, or 20% waste? Check the roof waste calculator first →Only know footprint or plan area? Convert it with the roof pitch calculator first →
What number do you have?
Roof size (sq ft)
Enter roof area or squares
Size unit
Shingle type
Waste level

Built for fast roofing estimates in the field.

Count bundles fast

Turn roof area or footprint plus pitch into roofing squares and shingle bundles without bouncing between a chart and a calculator.

Avoid short orders

The page adds waste before turning squares into bundles, which helps avoid the last-minute supplier call for missing material.

Keep the workflow moving

Once the bundle number looks right, send the input into the full RoofingBOM calculator for the complete material order.

What this tool does

This shingle estimator is built for one fast job: turning roof area into roofing squares and shingle bundles. It works when you already know roof area, and it also works when you only know footprint and need pitch applied first.

Step 1

Start with roof area directly, or start with footprint and apply pitch so the slope is not missed.

Step 2

Add a practical waste level based on whether the roof is simple, standard, or more complex.

Step 3

Convert order area into roofing squares, then into full shingle bundles and round up.

How bundle math works

  1. Measure roof area directly or convert footprint into actual roof area with pitch.
  2. Add waste to get the order area.
  3. Divide by 100 to get roofing squares.
  4. Multiply by bundle coverage and round up to full bundles.

When pitch matters

Footprint is smaller than true roof surface area. If pitch is skipped, bundle count can come out low before waste is even added.

Only have footprint? Convert it to real roof area first →

Why waste matters

Shingles do not land on the roof with zero scrap. Valleys, hips, cut-ups, and normal layout loss can push a job above the raw area number quickly.

Need the right waste factor before bundles? Check waste first →

What this tool does not include

  • Starter shingles
  • Ridge cap bundles
  • Underlayment rolls
  • Drip edge pieces
  • Premium or designer shingle coverage differences

FAQ

How many bundles are in a roofing square?+
For standard 3-tab and most architectural asphalt shingles, a square usually means 100 square feet and about 3 bundles. Always verify specialty products before ordering.
Does this estimator include waste?+
Yes. You choose a simple, standard, or complex roof waste level before the final bundle count is calculated.
Can I estimate bundles from footprint?+
Yes. If you only know footprint, this page applies pitch first so the bundle estimate starts from actual roof area instead of plan view.
Does this include starter or ridge cap?+
No. This page only estimates field shingles. Starter, ridge cap, underlayment, and drip edge should be counted separately.
Are architectural shingles always 3 bundles per square?+
Many standard architectural shingles follow the 3 bundles per square rule, but premium and designer products may use different coverage. Check the manufacturer wrapper before ordering.
Use this in the full roofing material calculator →