Material calculators for jobs at home
Three free calculators to find out how much material to buy before you start: plasterboard for walls and false ceilings, paint for a room and tiles for floors or walls. Each one shows the formula and where every figure comes from. They only give quantities: for prices, see the blog guides.
Plasterboard (drywall) calculator
Wall or false ceiling: sheets, profiles, hangers, screws, tape and joint compound.
Paint calculator
One room: litres and tins of paint, primer, masking tape and plastic sheeting.
Tile calculator
Floor or walls: m² with wastage, boxes, bags of tile adhesive and grout.
And to find out what it costs
The calculators give quantities, not prices. The market ranges for each job, with their sources, are in the blog guides. If you’d rather have a fixed price for your job, get a free quote with a couple of photos.

