Home, DIY, cooking and auto

Paint, tiles, concrete, recipes, fuel and more, in metric and imperial.

• Baker's Percentage Calculator Turn baker's percentages into ingredient weights from a flour or dough weight, or find the percentages and hydration of a recipe from its weights.
• Coffee Ratio Calculator Find how much coffee and water to use for pour-over, drip, French press, AeroPress, cold brew, moka pot or espresso, in grams, ounces and cups.
• Concrete Calculator Calculate the concrete volume in m³ or cubic yards and the number of 30 kg, 60 lb or 80 lb bags for a slab, footing, round column or steps.
• Deck Calculator Estimate deck boards, joists, beams, posts, screws or hidden clips and concrete footings for a rectangular deck, in metric or imperial units.
• Electricity Cost Calculator Calculate how much it costs to run an appliance per day, month and year from its watts, hours of use, standby power and your electricity rate per kWh.
• EV Charging Cost Calculator Estimate the cost and time to charge an electric car at home or at a public charger, the cost per 100 km or 100 miles and the savings versus gasoline.
• Fence Calculator Estimate how many fence posts, rails, boards or pickets and bags of concrete you need for a wood fence, with gates, corners, metric or imperial units.
• Flooring and Square Footage Calculator Calculate the square footage or square metres of several rooms and irregular shapes, then the flooring boxes to buy with a waste allowance.
• Gravel, Mulch and Soil Calculator Calculate how much gravel, crushed stone, sand, topsoil or mulch you need in m³ or cubic yards, its weight in tonnes or tons, and the number of bags.
• Heating and Cooling BTU Calculator Estimate the BTU/h and kW needed to cool or heat a room from its size, ceiling height, sun exposure, occupants and insulation. A rough sizing aid.
• Moving Checklist and Box Estimator Estimate how many moving boxes, rolls of tape and packs of paper you need, which truck size fits, and follow a printable 8-week moving checklist.
• Packing List Generator Generate a packing list for your trip type, length, weather and activities, with clothing quantities per day, then tick, edit, print or download it.
• Paint Calculator Work out how much paint a room needs, in litres or US gallons, for walls and ceiling, minus doors and windows, with coats, coverage and cans to buy.
• Pizza Dough Calculator Calculate flour, water, salt and yeast for any number of pizza dough balls, with hydration, yeast type conversion, fermentation guidance and poolish or biga.
• Recipe Scaler Scale a recipe to any number of servings. Paste the ingredient list in English or French, get friendly fractions and optional cups-to-grams conversion.
• Solar Panel Estimator Estimate how many solar panels and what system size in kW you need from your kWh use, your peak sun hours, the panel wattage and system losses.
• Speed, Distance and Time Calculator Find the speed, the distance or the travel time from the other two, in km/h, mph, m/s or knots and km, miles, metres or nautical miles, with the steps.
• Tile Calculator Calculate how many tiles and boxes you need for a floor or wall, in metric or imperial, with grout joints and a 10–15% waste allowance.
• Tire Size Calculator Decode a tire size like 225/45R17, get its diameter, sidewall, circumference and revolutions per km or mile, and compare two sizes with the speedometer error.
• Trip Cost Splitter Split shared trip expenses fairly between friends, see each balance and the few transfers that settle everything, with a summary to copy or download.
• Trip Fuel Cost Calculator Calculate the fuel cost of a road trip from the distance, your L/100 km or mpg and the fuel price, split it per person and compare vehicles.
• Turkey and Roast Cooking Time Estimate how long to roast a turkey, chicken, beef, lamb or pork roast by weight, with safe internal temperatures, resting time and turkey thawing time.
• Wallpaper Calculator Work out how many rolls of wallpaper you need from the room size, roll size and pattern repeat, for European rolls or US double rolls.