Cooking math is mostly conversions and ratios: scaling a recipe up or down, converting between volume and weight measurements, figuring out how much meat to buy for a crowd, and getting the timing right on roasted dishes. Our food and cooking calculators are designed to give you precise numbers quickly so you can focus on the actual cooking.

Recipe scaling and conversion is the workhorse. The recipe scaler adjusts ingredient quantities proportionally for any servings change. The grams-to-cups calculator handles the more nuanced conversion that depends on the specific ingredient (flour, sugar, butter, and rice each have different densities). The cooking converter handles temperature (Fahrenheit-Celsius for international recipes), oven dial-to-temperature for older recipes that say "moderate oven," and the common volume conversions (cups, ounces, tablespoons, milliliters).

For meat and protein planning, dedicated calculators address turkey cooking time (Butterball-style minutes-per-pound by oven temperature), steak cook time (Steven Raichlen-style thickness and doneness charts), BBQ meat quantity (typical 1/2 to 3/4 pound raw weight per adult, with adjustments for sides and event type), and cake serving (round and rectangular pans, party size).

Specialty calculators include coffee brewing ratios (golden ratio 1:15 to 1:18 of coffee to water by weight, with adjustments for press, drip, and pour-over), sourdough hydration (baker's percentage), pizza size comparison, and alcohol by volume (ABV) for home brewing and cocktail planning.

Conversions use standard reference data (USDA FoodData Central for ingredient densities, USDA food safety guidelines for meat cooking temperatures). Where multiple conventions exist (e.g., U.S. vs. UK cup volume), the calculator notes which it uses and provides the conversion. None of these tools replace USDA safe-cooking-temperature guidance: poultry to 165°F, ground meat to 160°F, whole cuts to 145°F with 3-minute rest, fish to 145°F. Use a thermometer; don't rely on time alone.