How Big Is A Toothbrush? Complete Dimensions

Brushing our teeth is an integral part of our daily routine, and the toothbrush is the primary tool we use for this task. Understanding the dimensions of a toothbrush can help us choose the right one that suits our needs and preferences.

The size of toothbrushes can differ depending on the intended age group. For infants, the brush may be smaller at 12.2 centimeters, while those for children aged 3 to 14 may be slightly larger at 16.6 centimeters. Adult toothbrushes, on the other hand, typically measure around 19.1 centimeters.

Let’s dive into the details and explore the complete dimensions of a toothbrush.

Standard Toothbrush Dimensions

toothbrush dimensions


The length of a standard toothbrush typically ranges from 6 inches to 8.5 inches (15 to 22 centimeters). This measurement includes the entire toothbrush, from the tip of the bristles to the end of the handle.


The width of a toothbrush varies depending on the brand and model. On average, the width is around 0.5 to 0.75 inches (1.3 to 1.9 centimeters). This dimension refers to the widest part of the brush head.

Bristle Length

The length of the bristles is an important consideration for effective cleaning. Generally, the bristle length ranges from 0.25 to 0.5 inches (0.6 to 1.3 centimeters). Shorter bristles are often recommended for better control and access to difficult areas.

Handle Diameter

The handle diameter of a toothbrush affects its grip and overall comfort during brushing. Typically, the diameter ranges from 0.25 to 0.5 inches (0.6 to 1.3 centimeters). Thicker handles may provide a more secure grip, especially for individuals with dexterity issues.

Toothbrush for Different Age Groups

Toothbrushes are generally categorized into three main groups based on age: infants, children, and adults. To better understand the toothbrush dimensions, let’s take a closer look at the measurements of each type of brush.

Infants/Baby Toothbrushes:

Baby toothbrushes are specially designed to be smaller than regular-sized ones since they need to fit comfortably inside the mouths of infants and toddlers aged 0 to 3 years old. These are specifically designed for infants and toddlers and are often made with soft, long bristles to ensure gentle brushing without having to insert the head too far into the mouth.

Typically, infant toothbrushes measure around 12.2 centimeters in length and feature a brush head measuring 2.1 centimeters in length and 0.9 centimeters in width. The neck of the brush is usually 2.6 centimeters long and the handle is 8.6 centimeters long.

Kids/Children’s Toothbrushes

Toothbrushes designed for children have many similarities with those for infants but with a slight difference. The bristles on these brushes tend to be slightly firmer, which helps in cleaning the food particles from the back teeth. The handles on toothbrushes for kids are longer, this design is to provide a comfortable grip for kids and to give them more control over their brushing. This allows children to brush their teeth independently and develop good oral hygiene habits without the supervision of parents.

These toothbrushes are generally around 16.6 centimeters long, with a brush head measuring 2.3 centimeters in length and 1.3 centimeters in width. The neck of the brush is 3.8 centimeters long and the handle is 10.5 centimeters long.

Adult Toothbrushes

Adult brushes are the largest of the three age groups, and they come with stiffer bristles to effectively clean teeth and remove plaque. They are designed to reach all the hard-to-reach areas of the mouth, including the wisdom teeth. Adult toothbrushes often have one or two tufts at the top of the head to help clean these areas more effectively.

These toothbrushes are typically around 19.1 centimeters in length. The brush head is 3 centimeters long and 1.4 centimeters wide, the neck is 4.2 centimeters long and the handle is 11.5 centimeters long.

Summary of Toothbrush Size & Dimensions

Toothbrush Age GroupAdultsChildrenBabies
Head Length32.32.1
Head Width1.41.30.9
Neck Width0.51.40.8
Neck Length4.23.82.6
Handle Width1.11.31.4
Handle Length11.510.58.6

Toothbrush Types and Sizes

Manual Toothbrushes

Manual toothbrushes come in various sizes, catering to different age groups and preferences. They are available in small, medium, and large sizes. Children’s toothbrushes are smaller to accommodate their smaller mouths, while adult toothbrushes are larger for better coverage.

Electric Toothbrushes

Electric toothbrushes also come in different sizes, but they generally have a larger brush head compared to manual toothbrushes. The dimensions of electric toothbrushes can vary depending on the brand and model.

Travel-Sized Toothbrushes

For those on the go, travel-sized toothbrushes offer convenience and portability. These toothbrushes are often smaller in size, with foldable or removable handles for easy storage.


What is the size of a normal toothbrush?

The size of a normal toothbrush can vary slightly depending on the brand and style, but a standard toothbrush typically has the following dimensions:
Length: A typical toothbrush measures around 17 to 19 centimeters (cm).
Width: The width of a toothbrush head is usually around 1 to 2 centimeters (cm).

What are the dimensions of a toothbrush in CM?

Length: A typical toothbrush measures around 17 to 19 centimeters (cm).
Width: The width of a toothbrush head is usually around 1 to 2 centimeters (cm).

How long are Oral B toothbrushes inches?

Regarding Oral B toothbrushes, their lengths can also vary based on the specific model and style. However, most Oral B toothbrushes tend to fall within the range of 17 to 19 centimeters (cm) in length.

What is the size of a toothbrush in MM?

To convert the size of a toothbrush to millimeters (mm), you can multiply the centimeter measurement by 10. Therefore, a normal toothbrush would be approximately 170 to 190 millimeters (mm) long.

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