Cooking Calculators and Kitchen Tools
Small kitchen jobs that usually take a calculator, a chart and the back of an envelope. Paste a recipe into the recipe scaler, set the servings you need, and every amount is multiplied and turned back into fractions you can measure, like ½ or ⅓ cup. Convert an oven temperature between Fahrenheit, Celsius and gas mark, with the adjustment for a fan or convection oven. Out of buttermilk, eggs or baking powder? The substitutions finder lists pantry, vegan and gluten-free swaps for 15 common baking ingredients, with the amounts to use.
While you cook, the cooking timer runs several labeled countdowns at once, with presets for eggs, pasta and rice and an alarm when each one ends. For the week ahead, fill in breakfast, lunch and dinner in the meal planner, save it in this browser or print it, and turn a jumbled shopping list into a grocery list sorted by store aisle. Everything runs in your browser, and your recipes and lists are not sent to us.
7 free tools in this category. All run in your browser with no signup.
Recipe scaling and baking substitutes
Resize a recipe for more or fewer servings, or swap in something you already have for an ingredient you are missing. For cups to grams and other kitchen measures, use the cooking measurement converter.
Oven temperatures and kitchen timers
Convert between °F, °C and gas mark, and run as many labeled timers as the meal needs. For one quick countdown there is also a dedicated egg timer.
Meal planning and grocery lists
Lay out a 7-day plan for breakfast, lunch and dinner, then print it or copy it as text, and sort your shopping list by aisle so you get through the store in one pass.
Frequently asked questions
What can I use instead of buttermilk?
Stir 1 tablespoon of lemon juice or white vinegar into 1 cup of milk and let it sit for 5 minutes. Other swaps for 1 cup of buttermilk are 1 cup of milk with 1¾ teaspoons of cream of tartar, ¾ cup of plain yogurt thinned with ¼ cup of milk, or 1 cup of kefir.
How much should I lower the temperature for a fan or convection oven?
Lower the recipe temperature by about 25°F (15°C) and start checking for doneness a little early, because the moving air cooks faster. A recipe written for 350°F in a regular oven becomes about 325°F with the fan on.
What gas mark is 350°F?
Gas mark 4, which is 180°C. Each gas mark step is 25°F, from gas mark 1 at 275°F (140°C) up to gas mark 9 at 475°F.
How do I scale a recipe that serves 4 to serve 6?
Multiply every amount by the new servings divided by the old ones, here 6 / 4 = 1.5, so 2 cups of flour becomes 3 cups and ⅔ cup of milk becomes 1 cup. Round eggs to whole numbers, use a pan with room for the extra batter, and check for doneness early, since baking times do not grow in step with the amounts.