Home & Trade

How much paint do you need? Measure the room, set the coats, and get litres plus a tin size to take to the shop.

How many plasterboard sheets, timber studs, or flooring packs a job needs — with waste you can see.

How much concrete a slab or footing needs — cubic metres, 20 kg bags, and a truck round-up.

How much gravel you need from the area and depth — cubic metres and tonnes.

How much mulch a garden bed needs — cubic metres, litres, and 25 L bags.

Pitch angle and rafter length from the rise and run you measure.

How many tiles a floor needs, including waste — square or rectangular.

How many 2400 × 1200 mm plasterboard sheets a wall needs, with waste.

Posts and rails for a run of fence, counting both ends.

How many deck boards you need from the area, the board width, and a waste allowance.

How many pavers cover an area, with waste you can change.

Sloped roof area from the plan area and the pitch, plus waste to order.

Bundles of shingles from the roof area and the cover per bundle, plus waste.

Gutter length and a rough downpipe count — a spacing guide, not a drainage design.

A rough cooling load from the floor area — a range in kW, not a specification.

Board feet from thickness, width, and length — millimetres in, board feet out.

Risers, goings, and stringer length for a total rise — geometry, not a code certificate.

How many studs a wall needs at the spacing you set, counting both ends.

Add up line costs and apply a markup on top — a working total, not a formal quote.