Calculate how many litres of decking or fence stain you need based on the area and number of coats.
Rough-sawn and previously unstained timber soaks up far more stain than smooth, sealed wood, so the first coat may cover less than the figure on the tin. For a fence panel measured on one side, the calculator gives the visible face area — double it if you are coating both sides.
As a rule of thumb, one litre covers about 10 square metres per coat on smooth timber. Rough or thirsty timber can halve that on the first coat.
Two coats is standard for new or bare timber. A single maintenance coat is often enough on previously stained surfaces.
For the longest life, yes. If you are coating both faces, double the area or run the calculation twice.
It depends on the area and number of coats — most stains cover 8–12 m² per litre per coat. The calculator works out litres from your deck or fence area.
Two coats is usual for good protection and even colour; bare or thirsty timber may soak up more. The calculator lets you set the coats.
Calculate how much paint you need for walls, ceilings and trim based on room dimensions.
OpenCalculate the number of wallpaper rolls needed for any room, accounting for pattern repeat.
OpenEstimate how much plaster you need for walls and ceilings, the number of bags and the total cost in metric or imperial units.
Open