How to Double a Recipe

Doubling a recipe means multiplying every ingredient by 2. If the original recipe makes 4 servings, the doubled recipe makes 8 servings. Use the recipe converter below to double a full ingredient list automatically.

Double My Recipe

Quick rule

To double a recipe, multiply each ingredient amount by 2.

1 cup → 2 cups
1/2 cup → 1 cup
1 tablespoon → 2 tablespoons
3/4 teaspoon → 1 1/2 teaspoons
2 eggs → 4 eggs

Ingredients to double carefully

Salt: Double it mathematically, but consider starting with 75–90% of the calculated amount and tasting before adding more.
Spices: Strong spices, chili powder, cayenne, and extracts can become overpowering when doubled.
Leavening agents: Baking powder, baking soda, and yeast usually scale, but very large batches can behave differently.
Alcohol, vinegar, and citrus: Double carefully and adjust to taste.

Does cooking time double too?

Usually, no. Doubling ingredients does not automatically double cooking time. If the food is spread across a larger pan at the same thickness, cooking time may stay close to the original. If the food is deeper or denser, it may need longer.

Scale a full recipe

Skip the manual math — paste your ingredient list into the recipe converter and we'll resize every line at once.