Question 1

How do I scale a recipe from 4 servings to 6?

Accepted Answer

Divide the target servings by the original servings to get your scaling factor. For 4 to 6 servings, the factor is 6 ÷ 4 = 1.5. Multiply every ingredient by 1.5. The calculator on this page does this automatically.

Question 2

Can I just double a recipe?

Accepted Answer

For most ingredients, yes — multiply everything by 2. However, leavening agents (baking powder, baking soda, yeast) should not always be doubled. For baked goods, increase leavening by about 75% rather than 100% when doubling to avoid a bitter or overly risen result.

Question 3

Do baking times change when I scale a recipe?

Accepted Answer

Usually not linearly. If you double a recipe but bake it in the same size tin, the baking time increases — but not by double. A good rule of thumb is to keep the same temperature, start checking at the original time, and add time in 5-minute increments. If you use a larger tin, the bake may actually take less time.

Question 4

What ingredients should I not scale directly?

Accepted Answer

Leavening agents (baking powder, baking soda, yeast), salt, strong spices, and alcohol should be scaled conservatively — usually 75% of the mathematical amount when doubling or more. Scaling down by half is generally fine for all ingredients.

Question 5

How do I scale a recipe to a fraction of the original?

Accepted Answer

Divide the target servings by the original servings. For example, halving a recipe that serves 8 gives a factor of 4 ÷ 8 = 0.5. Multiply every ingredient by 0.5. The calculator on this page handles fractions automatically.

Question 6

How do I convert scaled cup measurements to grams?

Accepted Answer

Once you have your scaled cup amounts, use a cups to grams converter to get accurate gram weights. The result depends on the ingredient — 1 cup of flour is 120g but 1 cup of sugar is 200g. RecipeScan can scan a full recipe and handle both the scaling and unit conversion at once.

Original	×0.5 (half)	×1.5	×2 (double)	×3 (triple)
¼ tsp	⅛ tsp	⅜ tsp	½ tsp	¾ tsp
½ tsp	¼ tsp	¾ tsp	1 tsp	1½ tsp
1 tsp	½ tsp	1½ tsp	2 tsp	1 tbsp
1 tbsp	1½ tsp	1½ tbsp	2 tbsp	3 tbsp
2 tbsp	1 tbsp	3 tbsp	¼ cup	6 tbsp
¼ cup	2 tbsp	6 tbsp	½ cup	¾ cup
⅓ cup	2½ tbsp	½ cup	⅔ cup	1 cup
½ cup	¼ cup	¾ cup	1 cup	1½ cups
⅔ cup	⅓ cup	1 cup	1⅓ cups	2 cups
¾ cup	6 tbsp	1⅛ cups	1½ cups	2¼ cups
1 cup	½ cup	1½ cups	2 cups	3 cups
1½ cups	¾ cup	2¼ cups	3 cups	4½ cups
2 cups	1 cup	3 cups	4 cups	6 cups
100g	50g	150g	200g	300g
150g	75g	225g	300g	450g
200g	100g	300g	400g	600g
250g	125g	375g	500g	750g
500g	250g	750g	1kg	1.5kg

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