How many grams are in a cup of popcorn

Measurement Basics

Understanding the basic measurements of ingredients is key to mastering recipe creation. If you’re new to baking and cooking, then it can be confusing to figure out the right amounts – particularly when it comes to measuring dry ingredients like flour, sugar, and popcorn.

In this section, we’ll explore the different units of measurement and the conversions between them to help you gain a better understanding of the basics:

Understand the metric system

Before understanding how many grams are in a cup of popcorn, it is important to understand the metric system. The metric system is the world’s most widely used system for measuring weight and volume. It has been adopted by many countries and is used for medical treatments, scientific applications, engineering and business.

In the metric system, measurements are expressed in “base” units such as meters for length, liters for volume and grams for weight. All other measurements are expressed as multiples of these base units; a millimeter (mm) is one-thousandth of a meter (m), liters are used to measure volume as well as milliliters (mL) which is one-thousandth of a liter (L). Similarly, 1 gram (g) is equal to 0.001 kilograms (kg). We can use this information to calculate how many grams are in a cup of popcorn depending on its size and type.

Understand the difference between grams and cups

When measuring and cooking, it is important to understand the differences between grams (g) and cups (c). While both are units of measurement, they are not interchangeable. Grams measure the mass of an item, while cups measure the volume. For example, there may be 120 g of sugar in 1 c, but 300 g of popcorn in 1 c.

Grams are often used to measure dry ingredients such as flour, sugar, or spices. You can also use them to precisely measure out things like butter or chocolate chips that need a smaller amount for baking. On the other hand, a cup is usually better suited for measuring wet ingredients such as milk or stock.

If a recipe calls for a specific weight or volume and you don’t have specialized tools to make those measurements accurately (such as a food scale), it’s important to understand equivalent measurements between grams and cups in order to get the correct proportions in your recipe. Below is a general guide for how many grams are found in one cup depending on the food:

  • Flour: 120 g
  • Brown sugar: 185g
  • Granulated sugar: 200g
  • Popcorn kernels: 300g
  • Oats/Cereal flakes: 30g

Pre-Popped Popcorn

For those looking to get a quick snack, pre-popped popcorn can be the perfect solution. Popped popcorn is convenient, tasty, and can be served conveniently in a variety of packaging. But, how many grams are in a cup of popcorn? That’s a question a lot of people may have when it comes to pre-popped popcorn. Let’s investigate a bit further to find out.

Estimate how many cups of pre-popped popcorn are in a bag

A pre-popped bag of popcorn usually contains between 8 and 9 cups of popped popcorn. To accurately calculate how many cups your particular bag contains, you must measure the un-popped kernels to determine their volume before they are popped.

To do this, determine the size, shape and weight of the un-popped kernels in your bag. Then weigh 20 grams (2 tablespoons) of those kernels and measure their volume using a measuring cup or scoop to get an estimate on the number of cups in your bag. You can also use a gram scale to weigh a few tablespoons or handfuls at once for a more accurate measurement. Once you have estimated the number of cups in your pre-popped popcorn, divide that number by nine to get grams per cup. For example, if you have 10 cups of un-popped popcorn then you will need 10/9 = 1.11 g per cup after popping.

For reference, one cup volume equals approximately 25 grams weight when measured before popping and approximately 10 – 12 grams after popping depending on brand and variety. Be sure that when measuring your pre-popped popcorn that you use consistent measurements and pay close attention to brand and variety to ensure accurate results every time!

Calculate the weight of a cup of pre-popped popcorn

A cup of pre-popped popcorn can be measured using two different measurements: weight and volume. When measuring a cup of popcorn in weight, the average range tends to be between 15-17 grams, depending on the type of popcorn used. However, when measuring one cup of pre-popped popcorn in volume, the amount may vary depending on the size and shape of each individual kernel. To obtain the most accurate measurement, it is important to take into consideration any extra air space between kernels that can cause discrepancy in measurements.

In addition to this, different types or brands of pre-popped popcorn also have varying densities which can contribute to a change in weight per cup.

Popping Your Own Popcorn

Popcorn is a delicious snack, and making your own popcorn from scratch is a lot of fun. Whether you choose to use the microwave, stove-top, or air popper, the outcome is sure to be delicious and satisfying.

But before you get started popping, you may be wondering how many grams of popcorn are in one cup. Let’s dive into the details and find out.

Estimate how many cups of kernels are in a bag

When tea time rolls around and you’re looking to make a batch of popcorn, how much should you use? Fortunately, the answer is a fairly straightforward one. Generally speaking, when it comes to popping your own popcorn, each bag of kernels contains between 2-3 cups of kernels.

It may take some experimentation—and some varying degrees of success!—to figure out exactly how many cups are in your particular bag. To get an exact measurement for the number of cups in each bag of popcorn kernels, it’s best to weigh them. Depending on the type and brand of kernels, the amount that fits into one cup will vary from 4 ounces/ 113 grams to 6 ounces/ 170 grams.

Once you know how much each cup weighs (it should be printed on the packaging), you can use a kitchen scale or other measurement device to estimate the number of cups in your bag and thus determine how much popcorn you’ll need for tea time.

Calculate the weight of a cup of kernels

A typical ratio for popping popcorn is 1/3 cup of kernels for every 2 tablespoons of oil for a 1-quart popper. To calculate the weight of a cup of popcorn kernels, you would need to know the specific weight or volume capacity of each popcorn kernel. This varies slightly based on the type of popcorn and growing region, but typically each single kernel ranges between 0.1 and 0.2 grams.

A cup measure of popcorn includes around 30-40 kernels per tablespoon, so one cup would be approximately 40 x 5 equals 200 g.

Popping and Measuring

When it comes to popcorn, the question of how many grams are in a cup is a bit tricky, since popcorn kernels can vary in size and density. Nevertheless, there are some general rules of thumb when measuring popcorn that can help you get a better idea of what to expect. We’ll take a deeper look into popping and measuring popcorn kernels so you can get an accurate measurement.

Measure out one cup of kernels

Popcorn is easy to measure out if you have the right tools. One cup of unpopped popcorn kernels is around 110 grams, so you’ll need a kitchen scale or measuring cup to get a proper measurement.

If using a kitchen scale, start by turning it on and then press the tare button to zero out the weight (in most cases). Then, measure out 110 grams of unpopped popcorn kernels and weigh them on the scale.

If using a measuring cup, pour 1/3 cup of unpopped popcorn kernels into it and level off any extra. Then, transfer the contents into a kitchen scale and weigh them for accuracy—1/3 cup should be approximately 110 grams (which is approximately 3 tablespoons).

For both methods, make sure to remove any hulls that may have been included in your measurement. Once you’ve determined your measurement, check it against our chart below which shows roughly how many cups you should use for various amounts of popped popcorn:

  • 1/4 cup popcorn = 1 serving (9-11 cups popped popcorn)/1 ounce (28-30 grams)
  • 1/3 cup popcorn = 1 ½ – 2 servings (13-17 cups popped popcorn)/2 ounces (4 tablespoons or 56-60 grams)
  • ½ cup popcorn = 2 ½ – 3 servings (20-25 cups popped popcorn)/3 ounces (84-90 grams)
  • ¾ cup popcorn = 4 servings (36 cups popped corn )/5 ounces (140 – 150 grams)

Pop the kernels and measure the weight of the popcorn

When making popcorn from kernels, popping the kernels and then measuring the weight of the popcorn can provide a more accurate estimate of how many grams are in a cup. This method is easier for those who don’t have a kitchen scale and are trying to estimate their recipes.

To begin, prepare an air popper or stovetop pan with lid according to the manufacturer’s instructions. Next, pour half a cup of uncooked kernels into the popper or pan, bringing it to a heat source such as a stovetop. Afterwards, pop the kernels until they appear in their full and crispy state but keep in mind not to over-pop them as they tend to burn more quickly than expected. After popping, allow the popcorn pops to cool off before transferring them onto one cup worth of measuring cups. Once on there, proceed by pressing down some of the popped popcorn with an additional cup until reaching approximately one cup (or 8oz) worth of popped corn measure for accuracy purposes.

Finally, take note of how much weighed on your kitchen scale when you measured out your ingredients; that is exactly how many grams are in one cup of popcorn! Although this will provide a general estimate for dosing measurements like recipes or portion calculation purposes, it is important to recognize that several factors can impact accuracy:

  • Kernel types and sizes which determines your popped-kernels shape after popping;
  • Atmospheric pressure depending on environment also plays an important role when popping as air pressure affects all physical materials differently depending upon its interaction with heat sources – stovetop flames/electric powered machines etc.

Nevertheless taking these factors into consideration could help you adjust accordingly when attempting any recipes needing this ingredient!


After studying the different variables that affect popcorn volume, it can be concluded that the amount of popcorn that fits into a cup depends on the volume of the cup, the type of popcorn kernels, and the size of the kernels.

Generally speaking, a cup of unpopped popcorn kernels weighs around 115-120 grams, while a cup of popped popcorn will weigh around 8.5-14.5 grams. Understanding these factors can help you accurately measure the popcorn you need for your next movie night.

Summary of the results

This guide provides an overview of the different roasts and color categories of coffee, ranging from light to dark. Each roast is characterized by its flavor, caffeine content and surface oil content.

  • Light roasts have a milder flavor while dark roasts possess strong flavors with little acidity.
  • Light roasts have slightly higher levels of caffeine than dark roasts.

The choice of roast is largely reliant on personal preference, although geographic location may also influence the selection.