Category
Cooking calculators
Free cooking and kitchen calculators. Scale any recipe up or down with practical kitchen rounding, estimate cook time for meats by weight + method, convert oven temperatures (Celsius / Fahrenheit / Gas Mark with fan-oven adjustment), and compute cost per serving for meal planning or restaurant menu costing.
4 calculators in this category.
Recipe Scaler
Scale any recipe up or down by servings
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Cooking Time Calculator
Meat, poultry, fish times for oven, slow cook, pressure cook
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Oven Temperature Converter
Celsius, Fahrenheit, Gas Mark with fan equivalents
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Cost Per Serving Calculator
Recipe food cost and menu pricing
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Frequently asked questions
Does scaling a recipe always work?▾
Linear scaling works for most ingredients. Exceptions: spices and salt scale sub-linearly (taste at 60-70%). Cooking time doesn't scale linearly — a 2× cake takes ~1.5× time, not 2×. Yeast/leavening can misbehave above 4× or below ¼× scaling.
What's the right internal temperature for chicken?▾
USDA: 74°C (165°F). Carry-over cooking adds 3-5°C during rest, so pull at 70-71°C and let it rest 5-10 minutes. Use a meat thermometer; don't rely on cooking time alone (oven temperatures vary ±15°C from the dial).
How do I convert °C to Gas Mark?▾
Each Gas Mark = ~14°C. Common conversions: Gas Mark 4 = 180°C (moderate), Gas Mark 7 = 220°C (very hot). The Oven Temperature Converter handles all three (Celsius, Fahrenheit, Gas Mark) with recipe descriptors.
Why does the calculator suggest -20°C for a fan oven?▾
Fan circulation moves hot air around food more efficiently than still air, so food cooks faster at any given dial setting. The universal rule: reduce conventional recipe temperatures by 20°C when using fan. So a 180°C recipe = 160°C fan. Cook time stays similar or drops 10%.
How is restaurant menu price calculated from ingredient cost?▾
Menu price = ingredient cost ÷ target food cost %. Restaurants typically target 25-35% food cost — so an AED 8 ingredient cost at 30% target = AED 27 menu price. The Cost Per Serving Calculator does this automatically; just set your target % to your operating model.