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Areas, paint, tiling and energy use.
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Volume converterLitres, millilitres, gallons, pints, cups and cubic metres.Area converterSquare metres, hectares, acres, square feet and more.Energy converterJoules, calories, kWh, BTU — from nutrition to the power bill.Cooking converterSpoons, cups, millilitres and ounces — follow any recipe.Volume and surface of a solidCube, box, cylinder, sphere, cone and pyramid: volume, surface and capacity in litres.Paint calculatorHow many litres of paint for your walls, doors and windows deducted.Tile calculatorNumber of tiles, boxes and cost, offcuts included.Wallpaper calculatorRolls needed for your walls, pattern repeat included.Electricity costWhat an appliance really costs per day, per month and per year.Required heating powerEstimate the watts you need from the room volume and insulation.Concrete calculatorConcrete volume, cement bags, sand and gravel for a slab.Room area and volumeFloor area, volume, perimeter and wall surface in one go.Water usage costWhat your showers, baths and machines cost over a year.