Sounds like a simple question, right? The answer can surprisingly complicated because there are a number of variables involved, which include the machine, popping method, type and quality of the popcorn seed and popping environment.

Fortunately, we can break down the variables to help guide you in your future planning.

Estimating Volume From Seed:

As a general rule, 1 oz of popcorn kernels = 1 quart of popped corn so the math here is pretty simple. This means 4 oz of seed expands to 1 gallon of popped corn and 1 lb of seed converts to roughly 4 gallons of popped corn.

Again, this is only a general rule of thumb because of all the variables involved.

Seed Variables:

Type of seed of course makes a big difference. In general there are two main categories of seed. Butterfly, which is what most people are familiar with. It pops into irregular shapes, often with extensions that might look like wings and has a very tender and enjoyable mouth feel. Practically any popcorn bought at a movie theater, amusement park, or seed bought at a grocery store will be of this type.

On the other hand, Mushroom popcorn is a seed that pops more like a round top mushroom or ball shape. This is typically used for caramelized flavors and sometimes heavy cheese coatings because the shape allows for more even coating and it doesn't have the small wings featured in Butterfly that will easily break off during the coating process.

Because of the more consistent and compact shape of mushroom popcorn, it will compact and fit more uniformly into packaging, thus taking up less space. As a result, while a popped kernel of Mushroom will be roughly the same size and mass as piece of Butterfly popcorn, more Mushroom popcorn will fit in a bag or container than will Butterfly.

Put another way, a bag/cup of Mushroom popcorn will weigh more than a the same container of Butterfly popcorn. Inversely, a pound of raw Butterfly seed will pop into a greater volume than a pound of Mushroom corn.

Of course you can also buy popcorn seed in many various sizes (from miniature to Jumbo) which will also affect the measured output by volume.

In addition, the quality of the seed, and moisture content within each kernel will affect what percentage of seeds actually pops to sufficient size. Naturally, better quality seed that has been packaged and stored properly will pop into greater volume as well

Popping Method

How the kernels are popped has a vary noticeable impact as results well. Traditional oil popped (often referred to as fried) popcorn will generally be smaller in size, due to oil saturating the finished product. Most of our customers that have switched from fried to air popped see an increase in output in the 25% to 35% range. This is because this method not only pops corn into larger and more fluffy pieces, but also because a higher percentage of kernels actually pop, resulting in less waste. Note, that while air popped corn will result in higher volume output, traditional fried corn will weigh substantially much more due to the added weight of the oil itself.

Temperature of popping will also have a subtle effect on the size/volume of the seed. Higher popping temperatures will generally result in more of the kernels popping, and in the ability to pop more seed per hour, but this will also tend to reduce the overall size and volume of the popped pieces themselves.

Machines

This part of the equation is much easier to answer. Most machines are either rated in ounces per batch, or in pounds of seed popped per hour. Most RoboLabs poppers include the maximum hourly rate with the model name itself.
The RoboPop25 (Mini RoboPop) can pop 25 lbs of seed per hour, which converts to roughly 100 Gallons per hour.
The RP60 will pop up to 60 lbs of seed, totaling 240 gallons each our.
The RP75 up to 75 lbs or 300 of gallons hourly.
And finally, the RoboPop 220 (Grand RoboPop) pops 220 lbs of seed per hour, resulting in a whopping 880 gallons per hour.

Output By Weight

Customers often ask how much popcorn can be created per hour by weight. Realistically this question can only be answered by the end-user testing with their own equipment, seed and recipes. Not only will each and every one of the above variables come into play in the final answer, but not all caramel, cheese, savory or even just butter popcorn recipes are the same. Some producers use more and heavier ingredients than others and this substantially effects the final weight of the product, especially when you consider that the popcorn itself is quite light as compared to any added cheese, oil or caramel coatings.

In the end, the question of "How Much Popcorn Can a Popcorn Popper Pop?" is much more complex than most would assume. We can certainly tell you roughly how many pounds of seed our Robo Popcorn machines will pop in an hour, and approximately how many gallons (or quarts if you just multiply by 4) you can expect to fill. But in the end, you'll always need to test with the various seeds and recipes you intend to use in your own facility.

What we can confidently say is that our customers are always very surprised by just how much more popcorn they actually produce when using our equipment. Not only is there zero downtime when using our poppers (no need to load ingredients one batch at a time) but our equipment always pops a higher percentage of your seed and then pops them to a larger/fluffier size as well.