Floor Plan Scale Calculator
Convert measurements between a scaled floor plan and real size for architectural and metric scales.
Read moreFree tools
Construction and Materials Calculators
Material quantity calculators for concrete, drywall, paint, roofing, tile, flooring, decks, fences, masonry and earthworks.
- 19 items
Room Volume Calculator
Calculate room volume, floor and wall area, and the airflow needed for a chosen number of air changes per hour.
Read moreAsphalt Paving Calculator
Calculate tons of asphalt for a driveway or car park from area and thickness, plus material cost.
Read moreExcavation Volume Calculator
Calculate excavation volume, loose volume after swell and the number of truckloads to haul it away.
Read moreRough Opening Calculator
Calculate the framed rough opening for a door or window from the unit size and clearances, plus header length.
Read moreStair Calculator
Calculate the number of risers, riser height, treads, total run and stringer length for a straight staircase.
Read moreRebar Calculator
Calculate rebar for a slab grid: bars in each direction, total linear feet, sticks to buy with lap splices, and weight.
Read moreMasonry Block Calculator
Calculate concrete blocks and mortar bags for a wall from wall size, block face size, openings and waste.
Read moreBoard Foot Calculator
Calculate board feet and cost for a list of lumber pieces from thickness, width, length, quantity and price per board foot.
Read moreFence Material Calculator
Calculate fence posts, rails, pickets and concrete bags from fence length, post spacing, rails per section and picket spacing.
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