What Are Rubber Band Sizes? Complete Chart

Rubber bands are one of the most versatile and commonly used office and household supplies. They are powerful tools that keep items together, secure laptops to docking stations, and serve as a cost-effective makeshift solution for several everyday use cases. However, not all rubber bands are created equal, and choosing the wrong size can lead to frustrating experiences that undermine effectiveness and efficiency.

Typically, rubber bands have a standard thickness of 1/32 inch.

This article aims to provide a comprehensive guide on rubber band sizes to help users make informed decisions that improve productivity and overall experience.

Understanding Rubber Band Sizes

Rubber band sizes are based on their length, width, and thickness. When wrapped around an object, the length of rubber bands is usually between three to twelve times their relaxed length. This stretching capacity varies depending on the material and manufacturing process. In general, larger rubber bands have a higher stretching capacity than smaller ones.

Rubber bands come in various sizes to accommodate different needs and purposes. While there isn’t a universally standardized set of sizes for rubber bands, certain sizes have become commonly recognized as standard options due to their popularity and widespread availability.

Rubber Band Size Chart

The standard sizes of rubber bands typically refer to their length and width, with variations in thickness and elasticity. Here are some commonly used standard sizes:

  1. #16: This size is approximately 2 1/2 inches (63.5 mm) in length and 1/16 inch (1.6 mm) in width. #16 Rubber bands are commonly used for small tasks such as bundling small items or securing folded paper.
  2. #18: With a length of around 3 1/2 inches (88.9 mm) and a width of 1/16 inch (1.6 mm), #18 rubber bands are slightly larger than #16 bands. They are frequently used for bundling medium-sized objects or organizing paperwork.
  3. #19: These rubber bands have a length of about 3 1/2 inches (88.9 mm) and a width of 1/8 inch (3.2 mm). They are thicker than the #16 and #18 bands, providing increased strength and elasticity. #19 bands are commonly used for packaging and securing larger items.
  4. #32: With a length of approximately 3 1/2 inches (88.9 mm) and a width of 1/8 inch (3.2 mm), #32 rubber bands are similar to #19 bands in size. However, they are typically made from a thicker material, offering even greater strength and stretch. They are commonly used for heavy-duty applications such as securing large boxes or holding together heavy objects.
  5. Other sizes: Apart from the standard sizes mentioned above, rubber bands are available in a wide range of sizes to suit specific needs. These sizes can vary significantly, both in terms of length and width, catering to diverse applications such as industrial use, stationery, or crafting.

Rubber Band SizeLength Width
#162 1/2 inches1/16 inch
#183 1/2 inches1/16 inch
#193 1/2 inches1/8 inch
#323 1/2 inches1/8 inch

Factors that Determine Rubber Band Sizes

The industry has not yet established a universal sizing standard for rubber bands. Therefore, different manufacturers have their own gauge systems that correlate with their products, resulting in inconsistencies in sizes. These factors include:

  • Length: standard sizes range from 1/2 inch to 1 foot.
  • Width: generally measured in inches, ranging from 1/32 inch to 1 inch.
  • Thickness: usually measured in mils, ranging from 1/32 inch to 1/4 inch.
  • Tensile strength: refers to the amount of force a band can withstand before breaking or losing its elasticity.

Sizes and Dimensions Rubber Band

Many rubber bands are made from natural rubber due to their superior elasticity compared to synthetic rubber. When larger rubber bands are required, manufacturers often turn to elastomer for production. This material offers the necessary stretch for larger band sizes.

Classifying rubber bands is done by assigning them a number based on various dimensions. These dimensions include the length, width, and thickness of the band. By measuring these characteristics, rubber bands can be accurately classified and identified.

rubber band sizes

As an illustration, rubber bands of size 14 are characterized by a length of 2 inches, a width of 1/16 inch, and a thickness of 1/32 inch. The length of the band is calculated as half of its circumference, the width is the span between two cut edges, and the thickness represents the distance between the inside and outside surfaces.

When it comes to classifying standard rubber band sizes, width is the defining characteristic. Starting with the smallest, we have rubber bands that are 1/16 inches wide, which are given numbers 8 to 19. Moving up a size, we have rubber bands that measure 1/8 inch wide, which are identified by numbers 30 to 35.

The pattern of classifying by width continues for larger rubber bands, including those with widths of 1/4 inches, 3/8 inches, 1/2 inches, and so on. And for those extra-long rubber bands, you’ll find classifications starting with numbers above 100.

Related: Standard Bubble Mailer Dimensions

Importance of Selecting The Right Size of Rubber Band

When it comes to rubber bands, it’s not just a matter of picking any size that’s available. In fact, the size of the rubber band you choose can make a big difference in how well it works for you. Here’s why choosing the right size is so important.

First of all, using the right size of rubber band can help you achieve optimal elasticity. If the rubber band is the right size, it will stretch easily when you need it to and then return to its original shape when you’re done. This is important for tasks like wrapping packages, organizing paperwork, and more. If the rubber band is too small, it won’t stretch as much, and if it’s too big, it might not return to its original shape as well.

Another reason why the right size of the rubber band is important is that it provides a secure hold. If the rubber band is too small, it might not have enough tension to hold your items in place, and if it’s too large, it could slip or even break under pressure. This can lead to damage or loss of the items you’re trying to secure.

Additionally, using the right size of rubber band can help prevent breakage. Rubber bands that are too small or that are over-stretched are more likely to snap or break, which can be frustrating and wasteful. By choosing the right size, you can reduce the likelihood of breakage and get the most out of your rubber bands.

Lastly, using the right size of rubber band can make your tasks and projects easier and more effective. It allows you to complete your work more smoothly, reduces frustration and waste, and helps keep your work neat and organized.

What Important Things Should I Consider When Purchasing Rubber Bands?

When purchasing rubber bands, other important factors to consider include:

  1. Elasticity: Ensure the rubber band has enough stretch for its intended use, but not so much that it becomes too loose or loses its shape.
  2. Durability: Choose a rubber band that is durable and resistant to snapping, breaking, or losing its shape, especially if it will be used frequently.
  3. Allergen Concerns: If you have latex allergies, consider buying rubber bands made from synthetic rubber, as natural rubber may cause an allergic reaction.
  4. Environmental Factors: If you are concerned about the environment, consider purchasing rubber bands made from eco-friendly or biodegradable materials.
  5. Cost: Rubber bands come in different price ranges, so consider your budget when making a purchase and weigh the cost against the quality and quantity you are getting.


What are the standard sizes of rubber bands?

The standard sizes of rubber bands can vary depending on the manufacturer and their intended use. However, there are some common size designations that are often used:
Size #12: Approximately 1 1/4 inches (3.2 cm) in length and 1/16 inch (1.6 mm) in width.
Size #16: Approximately 2 1/2 inches (6.4 cm) in length and 1/16 inch (1.6 mm) in width.
Size #32: Approximately 3 inches (7.6 cm) in length and 1/8 inch (3.2 mm) in width.
Size #64: Approximately 3 1/2 inches (8.9 cm) in length and 1/4 inch (6.4 mm) in width.

How do you read rubber band sizes?

Rubber band sizes are typically indicated using a numbering system or a size code. The numbering system can vary between different manufacturers, but generally, the higher the number, the larger the rubber band. For example, size #16 is larger than size #12, and size #64 is larger than size #32.

How big is size 16 rubber band?

A size 16 rubber band is approximately 2 1/2 inches (6.4 cm) in length and 1/16 inch (1.6 mm) in width.

How big is a #64 rubber band?

A #64 rubber band is approximately 3 1/2 inches (8.9 cm) in length and 1/4 inch (6.4 mm) in width.

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