§ 01FREE TOOL · ROOFING SQUARE CALCULATOR

ROOFING SQUARE
CALCULATOR.

Convert ground footprint and pitch into total roofing squares + a bundle-count estimate for shingles, underlayment, ridge cap, and nails. Includes a 10% waste factor (adjustable).

◆ INPUTS

Length × width of the roof footprint. A 40 × 60 ranch = 2400.

10% standard residential. 15% for complex hips/cuts.

◆ ESTIMATE
TOTAL SQUARES
29.6
2,952 sq ft (incl. 10% waste)
Shingle bundles (3-tab)
3 bundles per square
89
Underlayment rolls
~4 squares per roll
8
Ridge cap bundles
5% of squares
2
Starter strip bundles
10% of squares
3
Roofing nails (lbs)
~1.5 lbs per square
45
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ESTIMATE → PROPOSAL → SIGNED.

Revolve Core takes the same square calculation, attaches it to the customer record, generates a branded proposal, and lets the homeowner e-sign on phone. Two-way QuickBooks sync the moment they do.

SEE THE FULL ESTIMATING WORKFLOWGET FREE BETA ACCESS
§ 03FAQ · ROOFING SQUARE CALCULATOR

QUESTIONS
ABOUT THE MATH.

A roofing square equals 100 square feet of roof surface. It's the standard unit shingles, underlayment, and other roofing materials are sold and estimated by.