How to Scale a Recipe to Adjust for Different Portions (2024)

If you have more or fewer people to feed than a recipe serves these tips will show you how to scale a recipe to the serving amounts you need.

You’ve got family coming over and your favorite beef stew recipe serves 4, but you’ve got 7 people coming. Or maybe it’s the opposite for you, you used to make recipes for 4 but now there is only two or one of you to feed.

What are you going to do?

How to Scale a Recipe to Adjust for Different Portions (1)

One solution is to scale the recipe.

So you can serve more people or less, but it’s not always as straightforward as it seems. Here are some tips to make your recipe scaling a success.

How to Scale a Recipe, Find You Recipe Conversion Factor

The easiest approach to scaling a recipe is to multiply or divide the ingredients to the portion size you need and to do that, you need to calculate your recipe conversion factor.

For example, if you are going to make a pasta sauce that served 6, but you need it for 12, you can multiply all the ingredients by 2 and 2 is your conversion factor. Or if your recipe is for 4 and you only want two serving, you’d divide by 2.

The precise formula is:

number of servings you want ÷ number of servings in recipe = your magic number

Use your magic number and multiply to increase a recipe or use your magic number and divide to make a smaller amount.

Of course, you can run into problems with this if you need 1 3/8 tsp of basil and you don’t have a 3/8 measure.

In this case, use your judgment and simply round off the number to 1 ¼ teaspoons. It’s not likely to make a crucial difference.

Still, there are more problematic ingredients. What if you end up needing 3 ½ eggs?

That gets a little trickier. I usually opt for the smaller amount of 3 eggs and add a little more liquid if needed. In most recipes, this works out well.

Also keep in mind that some recipes don’t scale well, including baked goods. If you decide scaling is not a good idea, we’ve got some tips for you at the end of this article.

How to Scale a Recipe to Adjust for Different Portions (2)

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Things to Consider When Scaling a Recipe

There are a couple of things to consider including cooking time and your cooking dishes.

Cooking Time: If you’re preparing larger or smaller portions, it may alter your cooking time. Allow for more time if making a larger portion.

For smaller portion check the dish at least 10 minutes early to see if it’s done. You don’t want to overcook the dish.

If you’re cooking meat; make sure to use a meat thermometer to ensure the appropriate internal temperature is reached.

Cooking Dishes: If you’re making baked macaroni and you halve the recipe, try to find a dish that will keep the macaroni at the same depth as the original recipe.

For example, if the recipe called for a 13 x 9-inch pan, find a rectangular or square pan about half the size. Like an 8-inch square pan.

That will help ensure your cooking time will be roughly the same.

What to Do if the Recipe Doesn’t Scale Well

If you discover your recipe won’t do well with scaling, and the recipe is too large, go ahead and make the full recipe. You can portion and freeze any unused amounts.

Allow the food to cool completely before freezing. Also, remove any air from freezer bags and make sure that your freezer-safe containers are nearly full, so there isn’t any extra air.

And finally, don’t forget to date and label what you’ve got, so you can come back to it later. I also like to add it to my freezer inventory sheet.

If the recipe is too small, but won’t scale well, cook it in batches. That way, you can ensure you’ve made the recipe according to the specifications, but still get the portion you need.

How to Scale a Recipe to Adjust for Different Portions (3)

Those are my tips for how to scale a recipe. Start with your conversion number then adjust for cooking time and the cooking dish. With those three things, you should be able to scale most recipes up or down successfully.

Do you have any extra tips to add to how to scale a recipe? I would love to have you share them in the comments below.

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How to Scale a Recipe to Adjust for Different Portions (2024)

FAQs

What are the steps for scaling a recipe when the portion size is changed? ›

How To Scale Up A Recipe: 4 Easy Steps
  1. Step 1: Determine the Conversion Factor for the Recipe. ...
  2. Step 2: Convert all Weights in the Recipe to Ounces and all Volumes to Fluid Ounces. ...
  3. Step 3: Multiply Each Ingredient in the Recipe by the Conversion Factor. ...
  4. Step 4: Simplify and Round the Numbers for Easier Recipe Use.

What is the formula for scaling recipes? ›

The way to scale a recipe by number of servings is to multiply the original amount by the desired serving size and then divide by the original serving size.

What is the formula for adjusting recipes? ›

Determine the required yield of the recipe by multiplying the new number of portions and the new size of each portion. Find the conversion factor by dividing the required yield (Step 2) by the recipe yield (Step 1). That is, conversion factor = (required yield)/(recipe yield).

How do you adjust a recipe if you need more or fewer servings? ›

To convert serving sizes, we incrementally adjust the individual serving size of each ingredient up or down. For example, if you adjust a recipe with 2 servings that needs 1 onion up to 4 servings, we'll divide the ingredient amount by 2 (1 onion / 2 servings = 0.5 onions) and then multiply that by 4.

How do you adjust portion sizes? ›

8 top tips for portion control
  1. Use a smaller plate. A standard-sized portion will look small on a larger plate, making you feel dissatisfied. ...
  2. Don't double your carbs. ...
  3. Give measuring cups a go. ...
  4. Be selective with your seconds. ...
  5. Don't pick at leftovers. ...
  6. 20-minute rule. ...
  7. Check food labels. ...
  8. Ask for less.

What is the formula for scaling? ›

The basic formula that is used for calculating the scale factor is, Scale factor = Dimension of the new shape ÷ Dimension of the original shape. In case, if the original figure is scaled up, the formula is written as, Scale factor = Larger figure dimensions ÷ Smaller figure dimensions.

What is the four-step process to adjusting the size of a recipe? ›

Step 1: Determine the “multiplying factor.” Step 2: Convert different units to one unit. Step 3: Multiply each ingredient times the “multiplying factor.” Step 4: Change the new quantities to the largest unit of common weights and measures.

How to do scale calculations? ›

To find the scale factor, first find the corresponding sides on the two figures. Then, divide the measurement of the new figure by the measurement of the original figure. The resulting value is your scale factor, or how many times larger or smaller your new figure is compared to the original.

How do you convert measurements in a recipe? ›

Use the following dry measurement conversions to easily adjust your recipes.
  1. 1 tablespoon = 3 teaspoons.
  2. 1/4 cup = 4 tablespoons.
  3. 1/3 cup = 5 tablespoons + 1 teaspoon.
  4. 1/2 cup = 8 tablespoons.
  5. 1 cup = 16 tablespoons.

How to divide cooking measurements? ›

To help divide recipes, remember:
  1. 1 cup = 16 tablespoons.
  2. 1 tablespoon = 3 teaspoons.
  3. 1 cup = 8 fluid ounces.
  4. 1 fluid ounce = 2 tablespoons.
  5. 1 pound = 16 ounces (weight)
  6. 1 pint = 2 cups.
  7. 2 pints = 1 quart.
  8. 1 quart = 2 pints.

Can all recipes be scaled up or down? ›

You can do this with most recipes, but keep in mind that this process can sometimes modify the texture, taste, or appearance of the original recipe. Follow the tips above to help you get the best results! Sources: sweet2eatbaking.com.

How do you change the number of servings in a recipe? ›

Adjusting the number of servings of a recipe is called scaling, and broadly speaking, it involves multiplying (to increase) or dividing (to decrease) the quantities of the individual ingredients in the recipe.

What is the formula for scaling down a recipe? ›

It's calculated by diving the number of servings you want by the recipe yield. If the original recipe yields six servings, you can use simple math to adjust the ingredient quantities to have a scaled recipe that serves only two. In this example, the conversion factor is two divided by six which is one-third.

How do you scale servings? ›

Next, it's time to determine the scaling factor that will be used to help you calculate your new serving sizes. To do this, divide the desired number of servings by the original number of servings. For instance, if the original recipe serves four and you want to make it for 12, the scaling factor would be 12/4=3.

When changing the yield of a recipe How is the scaling factor calculated? ›

Calculate the scaling factor by dividing the number of servings (or grams) you want to make by the recipe yield. Example: This recipe yields five servings. If you are making nine servings, the scaling factor is 9 ÷ 5 = 1.8.

References

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