Construction & Engineering Calculators

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

Count blocks and mortar for a wall.

Count bricks and mortar for a wall.

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

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

Estimate gravel in cubic yards and tons.

Estimate mulch in cubic yards and bags.

Find how much topsoil you need.

Convert any area and depth into cubic yards.

Find how much sod you need.

Count pavers, base and sand.

Count posts, rails and pickets for a fence.

Count deck boards, joists and screws.

Find how many gallons your pool holds.

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

Estimate flooring boxes and cost.

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

Work out drywall sheets for a room.

Estimate how many gallons of paint a room needs.

Find how many wallpaper rolls you need.

Estimate siding for a house.

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.

Plan steps, rise, run and stringer length.

Work out board feet and lumber cost.

Find volts, amps, ohms and watts.

Find voltage drop in a wire run.

Convert watts to amps.

Find the right wire gauge.

Find the right AC size in BTUs.

Find the CFM a room needs.

Plan attic and floor insulation.

Size a home solar system.