Estimate gable roof area from building length, building width, roof pitch, eave overhang, rake overhang, and optional excluded areas. Calculate sloped roof square footage, roof squares, shingle bundles, underlayment rolls, waste, and roofing cost.
Building dimensions mode:
The calculator uses building length, building width, overhangs, and roof pitch to estimate two sloped gable roof planes.
One roof plane mode:
The calculator doubles one roof plane area to estimate the full gable roof surface area.
Known flat area mode:
The calculator multiplies flat roof footprint area by the pitch slope factor.
Roofing estimate:
The calculator estimates roof squares, shingle bundles, underlayment rolls, material cost, labor cost, tear-off cost, and total cost.
A gable roof area calculator helps estimate roofing square footage for simple two-plane roofs. It is useful for shingles, metal roofing, underlayment, sheathing, roof coating, tear-off planning, and labor estimates.
It can help calculate roof area, pitch factor, rafter length, ridge length, roof squares, shingle bundles, underlayment rolls, waste, material cost, labor cost, and estimated total roofing cost.
Your result shows flat footprint area, gable roof area, roof area with waste, pitch angle, slope factor, rafter length, ridge length, roof squares, shingle bundles, underlayment rolls, material cost, labor cost, tear-off cost, and estimated total cost.
Calculate one sloped roof plane area by multiplying ridge length by rafter length, then multiply by 2 for both sides of the gable roof.
Yes. A steeper pitch increases the rafter length and increases the actual sloped roof surface area.
A simple gable roof has two sloped rectangular roof planes.
One roofing square equals 100 square feet of roof area.
No. It is an estimate. Actual gable roof area can vary by overhangs, pitch changes, dormers, valleys, roof penetrations, trim details, waste, and measurement method.