Construction Calculators
Concrete Calculator: Volume, Weight and Cement
Concrete volume for a slab, column or strip foundation, with weight and approximate cement use.
Tile Calculator: Quantity, Boxes and Waste
How many tiles and boxes for a floor or wall, including joints and a cutting allowance.
Roofing Calculator: Gable Roof Area
Gable roof area, rafter length and ridge height from building size, slope and overhangs.
Stair Calculator: Steps, Rise and Run
Number of steps, rise, run, length and angle of stairs by the comfortable step formula.
Room Area Calculator: Floor, Walls and Several Rooms
Floor and wall area minus windows and doors, the total for several rooms and material cost.
Air Conditioner Size Calculator: BTU by Room
The air conditioner power from the room area and conditions, in kW and BTU.
Mulch and Gravel Calculator: Volume, Mass, Bags
The volume, mass and bags of mulch, gravel, sand and stone by area and depth.
Calculate concrete, tile, roofing, stairs and room area.
- Concrete — Concrete volume for a slab, column or strip foundation, with weight and approximate cement use.
- Tile — How many tiles and boxes for a floor or wall, including joints and a cutting allowance.
- Roof — Gable roof area, rafter length and ridge height from building size, slope and overhangs.
- Stairs — Number of steps, rise, run, length and angle of stairs by the comfortable step formula.
- Room Area — Floor and wall area minus windows and doors, the total for several rooms and material cost.