How Many Sweet Potatoes for a Cup? The Ultimate Guide.

Sweet potatoes are a staple in many households. They are versatile, delicious, and packed with nutrients. One of the most commonly asked questions about sweet potatoes is how many are needed to make a cup. The answer is not as straightforward as you may think. There are several factors that can affect the answer, including the size of the sweet potato, the way it is prepared and the method used to measure it. In this article, we will give you the ultimate guide on how many sweet potatoes you need to make a cup, so let’s get started!

Factors affecting the number of sweet potatoes needed to make a cup

Before we dive into the details, it is essential to understand the various factors that affect the number of sweet potatoes needed to make a cup. Understanding these factors will help you get a more accurate measurement and prevent waste.


The size of the sweet potato is probably the most significant factor that affects the number of sweet potatoes required to make a cup. Smaller sweet potatoes will require more per cup, while larger ones will need less.


How the sweet potatoes are prepared can also have an impact on the number needed for a cup. For example, mashed sweet potatoes may require fewer actual sweet potatoes compared to roasted or baked ones.

Measurement method

The measurement method used can influence the number of sweet potatoes required to make a cup. For example, a cup of mashed sweet potatoes could be measured differently than a cup of diced sweet potatoes.

How many sweet potatoes make a cup?

The answer to this question is not as simple as you may think. Here is a guide on the average number of sweet potatoes needed to make a cup:

Size of sweet potato Preparation Method Number of sweet potatoes needed for a cup
Small (6-8 ounces) Baked or roasted 2-3
Medium (8-10 ounces) Baked or roasted 1-2
Large (10-12 ounces) Baked or roasted 1-2
Small (6-8 ounces) Mashed 1-2
Medium (8-10 ounces) Mashed 1
Large (10-12 ounces) Mashed 1

These numbers are not set in stone and can vary based on the factors mentioned earlier. However, they can be used to guide you in your recipe measurements.

Other helpful tips when measuring sweet potatoes

Use a kitchen scale

One of the most accurate ways to measure sweet potatoes is by weight. A kitchen scale can provide the most precise measurements, especially when baking. This method ensures that you use the exact amount needed and eliminate the guesswork.

Be consistent

Consistency is crucial when measuring sweet potatoes. If you plan on using the same recipe multiple times, be sure to measure the sweet potatoes consistently each time. Using different sizes or preparation methods can alter the taste and texture of your recipe.

Be mindful of time

If you are baking sweet potatoes, be mindful of the time in the oven. Overcooking can cause them to shrink, which could affect your measurements. Therefore, be sure to check on your sweet potatoes regularly when baking or roasting them.


Here are some of the most common questions related to how many sweet potatoes make a cup and their answers:

  • Do I need to peel the sweet potatoes?
  • The decision to peel or not depends on your preference. However, leaving the skin on can affect your measurements, as it could change the weight of the sweet potato. Therefore, it is best to peel them when measuring to get the right amount.

  • Can I substitute sweet potato for pumpkin?
  • Yes, you definitely can! Sweet potatoes are an excellent substitute for pumpkin in recipes. The conversion is the same, which is that one cup of mashed sweet potatoes equals one cup of pumpkin.

  • How do I know if the sweet potato is cooked?
  • You can tell if a sweet potato is cooked by piercing it with a knife or fork. If it goes through smoothly, then it is cooked. Another way is to check the skin. If it peels off quickly, the sweet potato is probably cooked.

  • Can I use any type of sweet potato?
  • Yes, you can use any type of sweet potato in your recipe. However, the measurements may differ based on the size, so be sure to refer to the guide mentioned above for accurate measurements.

  • What should I do with leftover sweet potatoes?
  • You can refrigerate the remaining sweet potatoes in an airtight container for up to four days. Alternatively, you can freeze them for later use.


Measuring sweet potatoes for recipes does not have to be complicated. With the information provided in this article, you should now be able to measure sweet potatoes accurately and prevent waste. Remember to be consistent, use a kitchen scale, and be mindful of variables such as size, preparation method, and measurement method. With these tips, you can create delicious recipes using sweet potatoes without worrying about the measurements.


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