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Understanding Capsule Sizes: Critical for professionals and Individuals
 
Taking the proper amount of time to research the correct capsule size will save you valuable time and cost regardless of whether you are a seasoned professional or an individual consumer.
 
For encapsulating professionals, choosing the correct capsule size is critical when preparing to encapsulate a formulation or create a product line. Likewise, any individual consumer looking to make capsules for home use should do some research to ensure selecting the correct capsule. Many consumers or hobbyists are not familiar with the industry standards of capsule sizes, and this lack of knowledge often leads to purchasing the wrong sized capsule and results in product returns. Getting the order right the first time may take a little time but will eliminate purchasing errors and additional shipping costs. (See our returns policy for more details)
 
The capsule sizing charts on these pages can be extremely helpful tools for both individuals and professionals alike.
 
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Understanding the sizing method
Understanding sizing method of capsules is the most important step in determining exactly what you will need to purchase for your individual application. Capsule sizes are labeled with a numerical value, and this is how you will select capsules from our website. In addition to being categorized by capsule type, we also categorize our capsules by size.
 
Understanding capsule sizes can seems seem counterintuitive and therefore possibly confusing because smaller sized capsules have higher numbers than larger capsules. For example, a # 5 capsule is smaller than a #1 capsule. A “000” (triple zero) capsule is the largest size available. In cases where capsule sizes are indicated with "0" names, 000s are the largest, while 0s are smaller.
 
The basics of capsule sizes: 
- Capsule Sizes 1-5: The higher #= smaller size
- Capsule Sizes 0, 00 and 000: Less 0s = smaller capsule size
 
In some cases the capsule size can be selected on the simple basis of the actual physical size of the capsule. This could be a factor to consider when choosing a capsule for a pet or a child who may have limitations as to the diameter or length of the capsule they can ingest. For other applications, the additional key factors that determine the size of the capsule needed are the intended dosage and the density of the powder formulation being used.
 
Once you know the density of the powder you are using and the intended dosage, use the capsule sizing chart to see which size capsule will best accommodate these needs. Do you want it all to fit in one capsule, or do you prefer that the dosage be split amongst two or even three capsules?
Calculating the allocation of the dosage
 
To deliver the intended dosage, you can either try to consolidate multiple dosages into a larger capsule such as the 000 (ideal for adults and large pets such as dogs and horses) or divide the dosage among several smaller capsules such as 0s and 1s. Because these smaller capsule sizes are easier to swallow, they are most suitable for children and smaller pets.
 
Important factors to consider when choosing a capsule size:

  • Maximum length and diameter of the capsule that can be ingested (note that all capsules are measured in metric units. If you are unfamiliar with metric units of measure, use an online converter such as this: https://www.unitconverters.net/length/mm-to-inches.htm

  • Intended dosage- how much filler in each capsule?

  • Density of your filler material- how much will the capsule hold? (note that all powders on our size table are listed in metric units. If you are unfamiliar with metric units of measure, use an online converter such as this one: https://www.metric-conversions.org/weight/milligrams-to-ounces.htm

  • The size capsule designated by encapsulating equipment you may already own such as a manual or semi-automatic capsule filler. These fillers only work with one size capsule, so be sure you are selecting the size that corresponds to equipment you may already own.

  • The type of capsule you want- certain capsules such as pullulan, enteric, or herbal oil capsules are not available in all sizes. Determining the type of capsule you need first may narrow down your selection of sizes. 
While this may seem a lot to process, once you understand the basics, navigating through the information on the capsule sizing chart should be fairly straightforward. Should you still need assistance, give us a call at 888-515-7094. Our friendly telephone professionals are well-versed in the sizing and are available to answer your questions and help you.
 
Also, sometimes even when you have “done your homework,” a bit of experimentation may be required to see which size will work best. When this is the case, we recommend trying out a small amount (100-500 capsules) of a couple or several different sizes to see what will work best for your needs. Because of shipping costs, we do not offer free samples.
 
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