Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Drywall Materials Calculator

Count the exact number of drywall sheets needed for walls and ceiling of a room, minus door and window openings, with a 10% waste allowance built in. Great for estimating before a trip to the lumber yard.

Room Length (ft)

Room Width (ft)

Ceiling Height (ft)

Doors & Windows Area (sq ft)

Drywall Sheet Size

Fill in the required fields to see your result.

Construction

Roofing Material Calculator

Estimate the number of shingle bundles needed for a roofing project by entering the roof footprint, pitch multiplier, and coverage per bundle. Use it when planning a reroof or new construction to budget materials accurately.

Roof Length (ft)

Roof Width (ft)

Roof Pitch

Shingle Coverage per Bundle

Waste Allowance

Fill in the required fields to see your result.

Key differences

	Drywall Materials Calculator	Roofing Material Calculator
Category	Construction	Construction
Inputs required	5	5
Result	Total Drywall Cost ($)	Shingle Bundles Needed (bundles)
What it does	Count the exact number of drywall sheets needed for walls and ceiling of a room, minus door and window openings, with a 10% waste allowance built in. Great for estimating before a trip to the lumber yard.	Estimate the number of shingle bundles needed for a roofing project by entering the roof footprint, pitch multiplier, and coverage per bundle. Use it when planning a reroof or new construction to budget materials accurately.