Home & Cooking Calculators
Material and recipe quantities for home projects: concrete, paint, tile, floor area, recipe scaling and coffee ratios.
Most home-project estimates follow one pattern: measure the surface, multiply by a depth or a coverage rate, then round up to whole bags, tiles or gallons. Start with the square footage calculator for the size of a room, then use that area in the tile calculator for tiles and the paint calculator for gallons. The concrete calculator turns a slab, footing or post hole into volume, weight and bags.
The same habit of scaling quantities works in the kitchen. The recipe converter and scaler changes a recipe for more or fewer servings, and the coffee to water ratio calculator works out how much coffee a brew needs. Whatever the job, buy a little extra: tiles break, paint is absorbed unevenly and a pour always needs some spare.
Popular home & cooking calculators
- Concrete CalculatorVolume, weight and bag count for the pour you choose.
- Paint CalculatorGallons or liters for a room or exterior, minus windows and doors.
- Tile CalculatorTiles to order, allowing for gaps between tiles and waste.
- Square Footage CalculatorRoom area in square feet or other units, L-shaped rooms included.
All home & cooking calculators
- Coffee Ratio CalculatorChoose a brewing method and strength, then say how much coffee you want to make or how much ground coffee you have. The calculator returns the ratio and the matching weights of coffee and water in metric and US units.
- Concrete CalculatorChoose what you are pouring, enter its dimensions in any mix of units, and see how much concrete it takes as a volume, a weight and a bag count. Add a price and the same figures become a cost estimate.
- Paint CalculatorWork out how much paint a room or a house exterior needs. The calculator subtracts windows and doors from the wall area, multiplies by the number of coats and rounds up to whole gallons or liters.
- Recipe ScalerPaste your ingredients, enter the original and the new number of servings, and the scaler multiplies every amount for you. It can also switch the units between metric and US.
- Square Footage CalculatorType in the width and length of a room, or of the two sections of an L-shaped one, and get its area in square feet or any other unit. Add a price per square unit to see what flooring, paint or tile would cost.
- Tile CalculatorEnter the size of the area, the size of one tile, the gap between tiles and a waste allowance to get the number of tiles to order. Add a box size and price to see boxes and cost.