Construction Calculators

Free construction calculators for concrete, roofing, decks, fences, drywall, stairs, walls, and volume. Estimate materials before you build.

Estimate ready-mix volume and bag counts for slabs, footings, walls, and round columns.

Estimate roofing squares and shingle bundles using footprint and roof pitch.

Estimate decking boards and floor joists for a wood or composite deck.

Estimate fence posts, panels, pickets, and concrete bags for a planned run.

Estimate drywall sheets, screws, and joint compound for a room.

Estimate wall blocks plus base and backfill gravel for a retaining wall.

Calculate riser count, tread run, stair angle, and stringer length.

Convert project dimensions into cubic feet, cubic yards, and cubic meters.

Construction estimating tools