Construction Calculators

Fast, standards-based calculators for common construction tasks. Search for a calculator, or browse by category below.

Foundation

Volumes, areas, and quantities for foundation slabs and concrete work.

Openings

Trim, casing, and other quantities for doors and windows.

Stairs

Riser heights, tread depths, and cutting dimensions for stairs.

Roof

Rafter lengths, pitch, and cutting angles for roof framing.

Walls

Block and brick quantities for walls, including openings and waste.

Ceilings

Tile quantities and material estimates for ceiling coverings.

Floors

Tile quantities and material estimates for floor coverings.

Insulation

Board, framing, and fixing quantities for wall and attic floor insulation systems.

Heating

Pipe length, loop count, and screed quantities for water underfloor heating.

Electrical

Voltage drop, cable quantities, and socket/switch counts for simple electrical planning.

Exterior

Paving, fences and garden retaining walls: material quantities for outdoor hard landscaping.

Carpentry

Boards, joists, bearers, posts and fixings for timber structures such as decks.

Waterproofing

Membrane, sealing tape, corner piece and collar quantities for wet rooms.

Finishing

Quantities for the finishing pass around window and door joints, such as expanding foam.

Demolition

Debris volume, mass and container/skip counts for demolition and clearance work.

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