Every free online cooking calculator here runs inside your browser, so you can time a Sunday roast, scale a loaf of bread or work out a round of cocktails without an account, an email address or an ad in the way. Nothing you type leaves your phone or computer.
Give the Roast Cooking Time Calculator a weight and a doneness level, then check the result against the Meat Doneness Temperature Chart before you carve. Reach for the Oven Temperature Converter when the recipe is in Celsius and your dial is in Fahrenheit, and the Air Fryer Conversion Calculator when you want oven instructions turned into air fryer settings. That covers the question people ask most: how do I convert an oven recipe to an air fryer.
Bakers work in ratios, so the Baker's Percentage Calculator and the Sourdough Hydration Calculator let you scale a loaf up or down without guessing, and the Pizza Dough Calculator does the same for a Friday night. The Baking Pan Size Converter is for when the only tin you own is the wrong shape. On the coffee side, the Coffee Brew Ratio Calculator and the Cold Brew Calculator get your dose and water right.
Drink and party numbers can feel personal. The Cocktail ABV Calculator shows how strong the drink you just poured really is, the Homebrew ABV Calculator reads gravity numbers, and the Caffeine Intake Calculator adds up your day, while the Party Food & Drink Planner sizes quantities per guest and the Grocery List Organizer sorts the result by aisle. None of it is uploaded: no sign-up, no cookies, and the page keeps working if the kitchen Wi-Fi drops.
Lower the oven temperature by about 25°F (15°C) and cut the cooking time by roughly 20 percent, then check the food early. An air fryer is a small convection oven, so hot air moves faster and food browns sooner. Thin items like fries and chicken wings often finish quicker than the rule suggests, while thick cuts need the same internal temperature as before. The Air Fryer Conversion Calculator does the arithmetic in both Fahrenheit and Celsius.
As a rough guide, allow about 20 minutes per pound at 350°F for whole chicken, 20 to 25 minutes per pound for pork, and 15 to 20 minutes per pound for beef cooked to medium rare, plus resting time. Weight is only a starting point, because oven accuracy, the shape of the joint and its starting temperature all shift the result. Confirm doneness with a thermometer using the Meat Doneness Temperature Chart.
Baker's percentage expresses every ingredient as a percentage of the total flour weight, which is always 100 percent. Hydration is simply the water percentage, so 500g flour with 375g water is 75 percent hydration. Working this way lets you scale a recipe to any batch size, compare two doughs fairly, and adjust one variable at a time. The Baker's Percentage and Sourdough Hydration calculators handle starter and preferment flour too.