Home & Construction Calculators
Plan the materials for your next project. Every tool is free, with transparent formulas and worked examples.
Concrete Calculator
Estimate slab volume, waste allowance, and material cost.
Home & ConstructionPaint Calculator
Estimate how much paint your walls need, including multiple coats.
Home & ConstructionSquare Footage Calculator
Calculate room and combined areas in square feet and square meters.
Home & ConstructionFlooring Calculator
Estimate flooring packs, allowance and material cost for your project.
Home & ConstructionTile Calculator
Estimate tiles and full packs from area, tile size, grout and waste.
Home & ConstructionGravel Calculator
Estimate gravel volume, supplier-density mass and bulk material cost.
Home & ConstructionMulch Calculator
Estimate bulk mulch volume, bag quantity and the cost of bagged material.
Home & ConstructionDrywall Calculator
Estimate drywall sheet quantities from net wall and ceiling area.
Home & ConstructionRoofing Calculator
Estimate sloped roof area, roofing squares, whole packs and entered material cost.
Home & ConstructionStairs Calculator
Lay out equal risers, tread count, horizontal run and the rise/run diagonal for a simple stair.
Home & ConstructionDecking Calculator
Estimate stock deck boards from actual widths, gaps, orientation and an explicit no-offcut-reuse model.
Home & ConstructionFence Calculator
Estimate fence sections, posts, rails and pickets, accounting for open ends or a closed loop.
Home & ConstructionPavers Calculator
Estimate paving units, waste, and separate compacted base and bedding-sand volumes.
Home & ConstructionBricks Calculator
Estimate single-wythe brick quantities, openings, ideal mortar volume and brick material cost.
Home & ConstructionBoard Feet Calculator
Convert a lumber list into board feet, physical cubic meters and a cost using your entered rate.
Home & ConstructionBoard and Batten Calculator
Space battens evenly between flush edge battens and download each left- and right-edge position.
Home & ConstructionWallpaper Calculator
Estimate full-height strips and rolls while allowing for trim, pattern repeats and half-drop matching.
Home & ConstructionRebar Quantity Calculator
Count a user-defined reinforcement grid, stock bars, cut length and approximate steel mass.
Home & Construction