Home and DIY Calculators: Paint, Tiles, Decking and More
DIY calculators help you buy the right amount of materials the first time. Enter your measurements and the tools work out quantities, with a sensible allowance for cuts and waste.
Always check the coverage figures on the product you buy, because they vary between brands.
Roof Pitch CalculatorFind roof pitch angle, ratio and rafter length from the rise and run.Decking CalculatorWork out how many decking boards, joists and screws you need for a deck of any size.Concrete CalculatorWork out the concrete for a slab, footing or round post holes, in cubic metres, tonnes and bags, with a DIY mix.Paint CalculatorFind out how many litres of paint a room needs, and which tin sizes to buy, allowing for doors, windows and coats.Wallpaper CalculatorCount the rolls of wallpaper for a room from the wall height, roll size and pattern repeat.Tile and Paving CalculatorCount the tiles or paving slabs for a floor, wall or patio, with joints and waste, plus grout or sub-base.Carpet CalculatorWork out how much carpet to order from a 3.66, 4 or 5 metre roll, which way to cut it, and the joins.Brick and Block CalculatorCount the bricks or blocks for a wall of any length and height, with openings, joints, waste and mortar.Stair CalculatorPlan a staircase: number of steps, height of each riser, going and pitch, checked against the England building rules for stairs in a home.Fence Panel and Post CalculatorCount the panels, posts and gravel boards for a fence run, allowing for gates and separate sections.Square Metre Calculator for RoomsAdd up the floor area of several rooms in square metres, square feet and square yards, and take off cut-outs.Radiator Size Calculator (BTU)Estimate how much heat a room loses, and the radiator output in BTU and watts to heat it, from its walls, windows, floor and roof.Electricity Cost CalculatorWork out what appliances cost to run a day, month and year from their power in watts, the hours used and your price per kWh.
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