Construction & Engineering Calculators

Work out the volume of concrete needed for slabs, footings, and foundations in cubic metres or yards.

Measure total area for rooms, flats, decks, and plots using simple length and width inputs.

Estimate asphalt tonnage for driveways, paths, and car parks based on area and thickness.

Work out how many tiles, boxes, and extra waste you need for floors, walls, or backsplashes.

Estimate roof area, shingle bundles, or sheet counts based on dimensions and roof pitch.

Calculate rafter length, rise, and birdsmouth cuts from span and pitch for pitched roofs.

Estimate number, spacing, and total length of reinforcing bars for slabs, beams, and footings.

Estimate gravel in cubic yards and tons.

Estimate mulch in cubic yards and bags.

Estimate how many gallons of paint a room needs.

Find volts, amps, ohms and watts.

Convert any area and depth into cubic yards.

Work out board feet and lumber cost.

Plan steps, rise, run and stringer length.

Find how many gallons your pool holds.

Work out drywall sheets for a room.

Count posts, rails and pickets for a fence.

Find the right AC size in BTUs.

Count blocks and mortar for a wall.

Find voltage drop in a wire run.

Find how much topsoil you need.

Count deck boards, joists and screws.

Estimate flooring boxes and cost.

Count bricks and mortar for a wall.

Convert watts to amps.

Count pavers, base and sand.

Find the CFM a room needs.

Size a home solar system.

Find how much sod you need.

Find the right wire gauge.

Find how many wallpaper rolls you need.

Estimate siding for a house.

Plan attic and floor insulation.