Construction Calculators

Board feet for lumber from thickness, width, length and quantity (nominal sizes), with total cost at a price per board foot.

Cubic yards and approximate tons of gravel, sand, topsoil, mulch or compost to cover an area at a given depth.

Concrete for a slab: cubic yards with waste, ready-mix order size and the number of 40, 60 or 80 lb bags of mix.

Decking boards, joist count and screws for a rectangular deck from its size, board width, gap, joist spacing and stock length.

Drywall sheets for a room's walls and ceiling (4x8, 4x10 or 4x12), with waste, screw count and approximate weight.

Posts, rails and pickets for a straight fence from its length, post spacing, picket width and gap.

Gallons of paint for a room from its size, doors, windows and coats; optional ceiling. Rounds up to the quart.

Convert roof pitch (rise per 12), angle or percent slope; get the rafter length multiplier and roof area factor.

Stair layout from total rise: number of risers, exact riser height, total run, stringer length, angle and a code check.

Tiles needed for a floor or wall from area or room size, tile size, grout gap and waste, plus boxes if you give tiles per box.