Food & Cooking Calculators
Scale recipes, convert oven temperatures and dial in coffee ratios.
Good cooking is often a ratio problem. These tools help scale a recipe for a different number of guests, translate oven dials across countries and work out a coffee brew ratio without guesswork.
All Calculators34
Recipe Scaling Calculator
Scale an ingredient quantity up or down for a different number of servings.
Oven Temperature Converter
Convert oven temperatures between Celsius, Fahrenheit and gas mark.
Coffee Ratio Calculator
Work out coffee and water amounts from a brew ratio.
Baking pan size
Compare the area of two baking pans and scale a recipe between shapes.
Meat cooking time
Estimate pan or grill time per side for steaks, chops and chicken by thickness.
Roast time
Estimate oven time for a meat roast from its weight, doneness and oven temperature.
Air fryer conversion
Turn an oven temperature and time into an air-fryer setting.
Pasta serving
Work out how much dry pasta to cook for a given number of people.
Recipe nutrition
Turn a recipe’s total calories and macros into per-serving nutrition.
Rice water ratio
Measure the water and yield for common rice varieties.
Steak doneness temp
Find the internal temperature and resting target for a steak at your preferred doneness.
Calories per serving
Divide a recipe’s total calories by the number of servings, with an optional per-100 g view.
Cooking unit converter
Convert cups, tablespoons, millilitres, grams and ounces for common ingredients.
Dough hydration
Calculate bread hydration and salt percentage, including a 100% hydration starter.
Espresso yield
Measure dose, yield and brew ratio for an espresso shot.
Macros per serving
Convert a recipe’s total protein, carbohydrate and fat into per-serving amounts.
Recipe portion cost
Calculate the ingredient cost of one serving, including waste and optional extras.
Tip Calculator — How Much to Tip? Quick Tip & Bill Splitter
Enter your bill → instantly see the tip amount, total, and each person's share. Pre-tax tips, rounding, bill splitting, and tipping guide for the US, UK, Canada, Australia, France, Japan and more.
Pressure cooker conversion
Convert a conventional simmering time into a pressure-cooker time for common food types.
Sous vide time
Get a water-bath temperature and minimum cooking time for meat, fish and vegetables by thickness.
Alcohol dilution
Calculate how much water or mixer to add to reach a target strength.
Brine concentration
Turn a water volume and salt percentage into a weighed wet brine.
Cocktail batch
Scale a single cocktail recipe to a party batch, including an ice-melt allowance.
Marinade ratio
Build a simple oil, acid and salt marinade scaled to the weight of the meat.
Microwave time
Adjust a cooking time when you use a microwave with a different power output.
Party drink batch
Estimate how many drinks, bottles and bags of ice a party needs.
Pickling ratio
Split a vinegar-water brine and weigh the salt and sugar for refrigerator pickles.
Slow cooker conversion
Convert a slow-cooker time between the high and low heat settings.
Sourdough starter ratio
Scale a sourdough starter feeding by ratio and hydration.
Tea strength
Measure the right amount of tea leaves for a volume of water and strength preference.
Turkey size
Choose a turkey weight from guest count, appetite and how many leftovers you want.
Yeast conversion
Convert between fresh, active dry and instant yeast by weight.
Cold brew ratio
Scale coffee and water for a cold brew concentrate or ready-to-drink batch.
French press ratio
Measure coffee grounds for a French press from the water volume and desired strength.
Frequently asked questions
Can I scale every ingredient linearly?
Most ingredients scale linearly, but salt, spices, leavening and cooking time often need adjustment. Check the dish rather than multiplying everything blindly.
Why does fan oven temperature differ?
Fan ovens circulate hot air more efficiently, so recipes usually reduce the conventional temperature by about 20 °C.