Roofing calculators

Roof area, shingles, roof squares, metal roofing, sheathing, coating, insulation, and pitch calculators.

2557 approved calculators in this cluster.

Roof cost and estimates

Estimate roofing cost, rubber roof cost, tear-off cost, installation cost, and truss cost with editable planning inputs.

Roof area and squares

Convert roof area into roofing squares, square feet, and broad roofing material quantities.

Shingles and roof materials

Estimate shingle bundles, roofing materials, roof sheets, roof tiles, panels, rolls, and other roof products from coverage.

Roof heat cable

Estimate roof heat cable length from eaves, loop spacing, valleys, downspouts, and layout buffer.

Sheathing, coating, and insulation

Plan roof sheathing sheets, coating gallons, and roof or attic insulation bags as separate material lines.

Skylights, drains, and openings

Estimate skylight counts, roof windows, curbs, hatches, drains, scuppers, leaders, and downspout planning counts.

Flashing, vents, and accessories

Estimate flashing, trim, vents, sealants, fasteners, closure strips, snow guards, and other roof accessories as separate material lines.

Pitch and slope

Calculate roof pitch, slope, gradient, angle, rafter pitch, shed roof pitch, and 4/12 pitch checks.

Rafter length and geometry

Estimate safe geometry-only rafter length from run, pitch, and overhang without structural span design.

Roof area from pitch

Estimate pitch-adjusted roof surface area from footprint, overhang, and waste before converting to material units.

Gutters

Estimate gutter sections and gutter slope drops from roof-edge runs.