Roofing & Exterior calculators
Estimate roof surface area, shingles, siding, gutters and coatings.
7 calculators
Asphalt Tonnage Calculator
Asphalt is commonly quoted by weight, while a paving project is measured by area and compacted thickness. This calculator converts the main rectangle plus an optional additional patch area into volume and then estimated tonnage. Mix density is an input because the correct value depends on the paving mixture and specification.
Roofing & ExteriorRoof Area Calculator
The horizontal footprint of a pitched roof is smaller than its sloped surface. This calculator applies a slope multiplier to a rectangular building footprint plus uniform horizontal overhangs. It is useful for a simple roof where every plane has the same pitch and the plan area is fully covered once.
Roofing & ExteriorRoof Shingle Calculator
A shingle order includes more than field bundles. Starter courses and ridge caps can be separate products with linear coverage rather than square-foot coverage. This calculator accepts a measured sloped roof area and keeps those three purchase quantities independent. Field shingles receive an area cutting allowance, while starter and cap lengths receive a separate trim allowance.
Roofing & ExteriorRoof Pitch Calculator
Roof pitch compares vertical rise with horizontal run, while an angle uses degrees and a rafter length follows the slope. This calculator translates a safely obtained rise-and-run measurement into all three forms. It also reports the multiplier that converts a horizontal roof projection into sloped surface area when pitch is uniform.
Roofing & ExteriorGutter Material Calculator
A gutter purchase list mixes horizontal runs, vertical downspouts, stock lengths and small fittings. This calculator counts stock gutter sections for several identical straight runs, allowing overlap at each joint. Brackets are counted per run from a maximum interval, and downspout stock is estimated separately from total vertical height.
Roofing & ExteriorSiding Calculator
A siding takeoff often needs rectangular wall area plus triangular gables. This calculator handles both, subtracts windows and doors, and rounds the required coverage to cartons using the product’s labeled net coverage. The net figure should account for the panel overlap or reveal specified by the manufacturer; entering raw board area can underestimate the order.
Roofing & ExteriorExterior Paint Calculator
Exterior walls and trim often use different coatings, coverage rates and numbers of coats. This calculator separates the two purchases instead of applying one paint rate to the whole house. Wall area includes rectangular elevations and optional triangular gables, with opening deductions.
Roofing & ExteriorNo calculators match. Try a material name such as paint, wood, soil or tile.