Skip to Content

Sweet Corn Weights, Servings & Nutrition (Ultimate Guide)

You can buy sweet Corn in various forms, including whole ears of corn, canned and fresh kernels, and cobettes that are part of corn’s ear.

If you’re looking for weights, servings, and nutritional information for any kind of corn, look no further because it’s all inside this article.

So let’s get straight into the data…

Key Takeaways

  1. Sweet Corn Serving Sizes: A typical serving of corn is equivalent to half a cup of corn kernels, around 75g/2.6oz, or a small full ear of corn. This serving contains approximately 65 calories.
  2. Weight of Corn on the Cob: The weight of an ear of corn varies based on its size. A small ear weighs around 73g/2.58oz, a medium one 102g/3.6oz, and a large ear about 143g/5oz.
  3. Nutritional Overview: Sweet corn is a nutritious choice, rich in carbohydrates, dietary fiber, and protein. However, it has higher carb and sugar content compared to some other vegetables. When served with butter, the calorie content increases, with a 14g serving of butter adding 100kcal.

Sweet Corn Serving Sizes

Serving sizes of corn can vary depending on the type of corn, for example, a whole ear of various sizes or corn kernels that have been removed from the ear. Recommended serving sizes also vary depending on where you look.

As a general rule, a serving of corn is equal to:

  • Half a cup of corn kernels.
  • Around 75g / 2.6oz.
  • A small full ear of corn.
  • One or two corn cobettes (or mini corn – see below)

The edible amount of corn you get from these servings equals around 75g and contains 65 calories per serving (in kcal).

Sweet Corn Weight and Calorie Calculator

The calculator below will help you work out the calorie value for any serving size of sweet corn and help you convert weights from metric or imperial.

Calorie values are based on an average of 0.86kcal per gram of sweet corn (as per USDA data), which will work for yellow or white corn.

Please note this is for plain corn with no added fat or sugar, and calories may vary slightly if you’re using canned corn which contains added sugar (check the can for details).

How Much Does a Cup of Sweet Corn Weigh?

A US cup of sweet corn kernels weighs an average of 145 grams or 5.1 ounces, which is equal to the yield of a large ear of corn or around two servings.

If you prefer to measure in cups, then all the information you need is in the table below, including conversion weights and calories:

US Cup SizeSweet Corn Conversion Weight
In Grams & Ounces
Calories per weight
1 cup145g / 5.1oz125kcal
1/2 cup73g / 2.6oz63kcal
3/4 cup109g / 3.8oz94kcal
2/3 cup97g / 3.4oz83kcal
1/4 cup36g / 1.3oz31kcal
1/3 cup48g / 1.7oz41kcal

How Much Corn Do You Get From an Ear of Sweet Corn?

An ear of sweet corn is the part of the maize plant containing the corn kernels, which are protected beneath soft green leaves that reveal the corn beneath once removed.

Because they’re a natural product, the weight of an ear of corn will vary. To keep things simple, I’ve categorized the weights into average sizes (small, medium, and large) using official data from the USDA.

The figures in the table below are based on the edible yield and don’t include the core or outer leaves:

Ear of Corn SizeAverage Length (In inches)Average Yield Weight (In Grams & Ounces)
Small5 1/2″ to 6 1/2″73g / 2.58oz
Medium6 3/4″ to 7 1/2″102g / 3.6oz
Large7 3/4″ to 9″143g / 5oz

Corn Cobette Weights

Cobettes (or mini corn) are a smaller portion of a full cob that has been cut in half or into thirds. These mini corns can be found in most large grocery stores in either fresh or frozen sections.

A corn cobette from a medium corn cob that has been cut in half will yield an average of 51g/1.8oz of edible corn kernels, and a cobette that is a third of a medium ear of corn will yield around 37g /1.3oz.

The image below shows the typical size of a corn cobette (or mini corn):

image to show what a corn cobette looks like

Sweet corn Weight & Calorie Chart

The quick reference table below will help you find weight conversions and calorie values for various servings of sweet corn kernels.

This information is based on average weights and calorie values based on yellow or white corn without added sugar or fat.

Sweet Corn WeightConversion WeightCalories Per Serving

Sweet Corn Nutritional Information & Overview

Below are the main nutrients and just some of the vitamins and minerals found naturally in sweet corn, along with a range of others that aren’t listed in the table.

Although sweet corn is a healthy choice, it’s a higher carb and sugar option than some other vegetables such as broccoli or kale.

Nutrition TypeAmount Per 100g of Sweet Corn
Of which are sugars6.26g
Dietary Fiber2g
Saturated Fat
Vitamin C6.8mg

If you’d like more information about how much of each vitamin and mineral you should be consuming per day, take a look at this article over at Medical News Today.

How Many Calories are in Sweet Corn With Butter?

One of the most popular ways to serve sweet corn, especially corn on the cob, is whole with melted butter. It’s a delicious way to eat one of our favorite vegetables, but how does the extra butter impact the overall calorie values?

A typical 14g serving of butter contains 100kcal per serving, and this is enough to get the butter coverage you need for an ear of whole corn on the cob.

The table below shows the total calories for each size of an ear of corn, based on the edible yield and 14g of butter:

Corn on the Cob
Average Length (In inches)Total Calories with 14g of Butter
Small5 1/2″ to 6 1/2″ (73g / 2.58oz yield)163kcal
Medium6 3/4″ to 7 1/2″ (102g / 3.6oz yield)188kcal
Large7 3/4″ to 9″ (143g / 5oz yield)223kcal

More Sweet Corn Weights & Nutrition FAQs

How Much Sweet Corn is on a Cob?

An ear of average-sized medium corn on the cob will yield around 102g (3.6oz) of sweet corn kernels, which is equal to just under one and a half servings of corn. A serving of this size contains 88kcal.

How Much Do Two Cups of Sweet Corn Weigh?

Two level cups of sweet corn weigh a total of 290g (10.2oz) and will serve four people.

Source References

To ensure the nutritional information used in this article is accurate, I have used data from the USDA; the link below contains the source information in case you need it:

USDA FoodData Central Sweet Corn Nutritional information & Measures