Calculators
Every calculator on this site, grouped by category.
Foundation
Volumes, areas, and quantities for foundation slabs and concrete work.
- Concrete Slab CalculatorEstimate concrete volume for a slab from its length, width, and thickness.
- Strip Foundation CalculatorEstimate concrete volume, formwork area, and excavation volume for a strip foundation from its centreline perimeter and cross-section.
- Bored Pile CalculatorEstimate concrete volume for bored piles, including an optional widened bell base, across a full pile count.
Stairs
Riser heights, tread depths, and cutting dimensions for stairs.
- Straight Stair CalculatorWork out riser height, tread depth, stringer cutting dimensions, and a full 3D model for a straight flight of stairs.
- L-Shaped Stair with Landing CalculatorWork out riser height, going, pitch, stringer lengths for both flights, the landing, and a full 3D model for a 90-degree turn stair with a landing.
- U-Shaped Stair with Landing CalculatorWork out riser height, going, pitch, stringer lengths for both flights, the landing, and a full 3D model for a 180-degree turn stair with a half-landing.
Roof
Rafter lengths, pitch, and cutting angles for roof framing.
Walls
Block and brick quantities for walls, including openings and waste.
- Masonry Wall CalculatorEstimate the number of blocks or bricks needed for a wall, accounting for openings, mortar joints, and waste.
- Wall Tile CalculatorEstimate the number of wall tiles, adhesive, and grout needed, accounting for openings, joints, and waste.
- Drywall Partition CalculatorEstimate CW/UW metal frame, plasterboard, corner, and consumable quantities for a room's drywall partitions, accounting for door/window openings and waste.
- Plaster CalculatorEstimate plaster volume, mass, and bags needed for a wall, accounting for openings, layer thickness, and waste.
- Paint CalculatorEstimate paint volume and containers needed for a wall, accounting for openings, coats, and waste.
- Wallpaper CalculatorEstimate wallpaper strips and rolls needed for a wall, accounting for pattern repeat and waste.
Ceilings
Tile quantities and material estimates for ceiling coverings.
- Drywall Ceiling CalculatorEstimate CD/UD metal frame, plasterboard, and consumable quantities for a plasterboard ceiling on a suspended metal frame, including bearing and furring runs, hangers, connectors, and wall angle.
- Ceiling Tile CalculatorEstimate the number of ceiling tiles, adhesive, and grout needed for a room, accounting for joints and waste.
Floors
Tile quantities and material estimates for floor coverings.
- Floor Tile CalculatorEstimate the number of floor tiles, adhesive, and grout needed for a room, accounting for joints and waste.
- Laminate Flooring CalculatorEstimate laminate packs, planks, underlay, and skirting length for a room, accounting for the expansion gap at the walls and waste.
- Sheet Flooring CalculatorEstimate roll length, strip layout, and seams for linoleum, sheet vinyl, and carpet sold off a fixed-width roll.
Insulation
Board, framing, and fixing quantities for bonded (ETICS) and vented (rainscreen) wall insulation systems.
- Render Facade (ETICS) Insulation CalculatorEstimate insulation boards, adhesive, anchors, and reinforcing mesh for a rendered (ETICS) wall insulation system, plus its thermal resistance.
- Vented Facade Insulation CalculatorEstimate framing, insulation boards, wind barrier membrane, and fixings for a vented (rainscreen) facade.