Recipe Converter

About the Recipe Converter

Recipes are written for a set number of people, and the people you are cooking for rarely match it. A cake recipe serves eight but there are only three of you; a stew serves four but the whole family is coming. Changing a recipe by hand means multiplying every ingredient by the same awkward fraction, and then working out how to measure four and a half tablespoons or one and a half eggs.

This recipe converter does it for a whole recipe at once. Enter the original servings, the servings you want, and up to six ingredients with their amounts and units. It works out the conversion factor, recalculates every ingredient amount, turns awkward cup and spoon amounts into measurable combinations, and flags whole items such as eggs that need rounding.

How to Use the Recipe Converter

Enter the number of servings the recipe makes and the number you want.

For each ingredient, enter the amount, the unit — cups, tbsp, tsp, g, ml, eggs and so on — and, if you like, the name of the ingredient.

Leave unused rows blank.

The new amounts appear in the same units as the original. Spoon and cup amounts also show a practical breakdown.

How the Recipe Is Converted

  factor       =  new servings ÷ original servings
  new amount   =  original amount × factor

Every ingredient is multiplied by the same factor, so the proportions of the recipe stay the same.

Step-by-Step Example

A recipe for 4 servings with 2 cups of flour, 3 tbsp of sugar, 3 eggs and 250 ml of milk, converted to 6 servings.

  Factor:   6 ÷ 4                  =  1.5
  Flour:    2 cups × 1.5           =  3 cups
  Sugar:    3 tbsp × 1.5           =  4.5 tbsp  (4 tbsp + 1½ tsp)
  Eggs:     3 × 1.5                =  4.5 eggs  → round to 5
  Milk:     250 ml × 1.5           =  375 ml

Measuring Awkward Amounts

Scaled amounts rarely land on neat measures. The converter shows US cups and spoons as combinations you can actually measure, using these standard relationships:

| ½ cup | 8 tablespoons |

So 4½ tablespoons becomes 4 tablespoons and 1½ teaspoons, and 1¼ cups stays easy to measure with a quarter-cup scoop.

Eggs and Other Whole Items

Eggs are the classic problem when converting a recipe. For most cooking, rounding to the nearest whole egg is fine. For baking, where the balance of ingredients matters more, beat the eggs together and weigh or measure the amount you need: a large egg is about 50 grams without its shell, so half an egg is about 25 grams.

The same applies to other whole items such as garlic cloves or tins. Round sensibly, and taste as you go.

What Does Not Scale Neatly

Salt, spices and strong flavours. When multiplying a recipe several times, add these gradually and taste, because they can quickly become overpowering.

Leavening. Baking powder, bicarbonate of soda and yeast do not always need the full multiple in large batches.

Liquids that evaporate. A larger pot has a different surface area, so sauces may need less or more reduction time.

Cooking time and temperature. These depend on the size and depth of the food, not on the number of servings. Check for doneness rather than multiplying the time.

Pan size. Doubling a cake recipe in the same pan makes it twice as deep and changes how it bakes. The recipe scaling calculator can work out the factor for a different pan.

Converting Between Measuring Systems

This converter keeps each ingredient in the unit you entered. If a recipe uses cups and you prefer grams, scale it first, then convert: the cooking measurement converter handles volumes and weights, and the cups to grams calculator converts between them for specific ingredients.

Converting Recipes for Batch Cooking

Scaling a recipe up for the freezer or a large gathering works well for soups, stews, sauces and casseroles, which tolerate big batches. Use a pan large enough that the food is not crowded, since overcrowding makes browning difficult and lengthens cooking. It is often better to brown meat and vegetables in several smaller batches, then combine them for the long, slow part of the cooking.

Baked goods are trickier. Rather than making one enormous cake, it is usually more reliable to make the original recipe several times, or to bake the larger batch in several pans of the original size. That keeps baking times and textures as the recipe intended.

Writing Down the Converted Recipe

Once a converted recipe works well, write the new amounts down, or save them alongside the original. Next time there is nothing to recalculate, and any small adjustments you made to seasoning or cooking time are kept with the recipe.

Understanding Your Result

Conversion factor is the number every amount is multiplied by.

New amounts lists each ingredient in its new quantity, with measurable spoon breakdowns and rounding notes for whole items.

Servings confirms the change.

Worth knowing gives advice for large changes and cooking times.

When Should You Use This Calculator?

Cooking for more or fewer people than a recipe serves.

Doubling or halving a recipe.

Batch cooking for the freezer.

Scaling a family recipe for a party.

Planning quantities for shopping.

Common Mistakes

Scaling salt and spices by large factors without tasting.

Multiplying the cooking time.

Using the same pan for a much larger batch.

Ignoring eggs that do not divide neatly.

Mixing US and metric cups in the same recipe.