When it comes to getting a haircut, communicating the desired length to your hairstylist is crucial. Haircut numbers play a significant role in this process, as they provide a standardized system for identifying different hair lengths. In this article, we will explore various haircut numbers, including hair number 3, hair number 5, haircut number 7, and even hair number 0. Whether you’re looking for a short buzz cut or a longer style, understanding these hair numbers will help you achieve your desired look. Let’s dive in!

Hair Numbers

Hair numbers, often referred to as clipper guard sizes, indicate the length of hair left after using a specific clipper guard or blade. The lower the haircut number, the shorter the resulting hair length. Here’s a breakdown of some popular hair numbers:

Embracing the Bold: Hair Number 0

If you’re feeling adventurous and want to go for an ultra-short haircut, hair number 0 is the way to go. Hair number 0 means shaving the hair to the scalp, leaving no visible length. This bold choice is often associated with buzz cuts, military-style cuts, or individuals who prefer a minimalist and clean look. Hair number 0 can be a confident and striking choice for those who are ready to embrace their inner daring.

Hair number 0

Hair Number 3: A Versatile Length

Hair number 3 is a popular choice for individuals who prefer a shorter, yet still manageable, haircut. This length leaves about 3/8 of an inch (9.5mm) of hair on the scalp. Hair number 3 is often used for buzz cuts, crew cuts, and other short hairstyles. It provides a clean and neat appearance while remaining low-maintenance. With hair number 3, you can easily style your hair or leave it as is for a fuss-free look.

Hair Number 3

Hair Number 5: A Medium-Length Style

If you’re looking for a bit more length while still keeping a tidy appearance, hair number 5 might be the perfect choice. Hair number 5 leaves approximately 5/8 of an inch (16mm) of hair on the scalp. This length allows for more versatility in styling options. You can opt for a textured crop, a layered cut, or even a classic taper. Hair number 5 strikes a balance between short and long, providing a stylish look that suits various face shapes and hair types.

Hair Number 5

Haircut Number 7: A Longer Look

For those who desire a longer haircut, haircut number 7 is an excellent option. With haircut number 7, approximately 7/8 of an inch (22mm) of hair remains on the scalp. This length allows for more freedom in styling, including slicked-back looks, longer textured hairstyles, and side-swept styles. Haircut number 7 can give you a more relaxed and casual appearance while still maintaining a well-groomed look.

Haircut Number 7

Hair Cut Number Chart

Here is a commonly used hair cut number chart that is often used by barbers and hairstylists:

  1. Very short buzz cut: This is the shortest haircut, usually achieved with a clipper guard of 1/8 inch (3 mm) or even shorter. It leaves the hair very close to the scalp.

  2. Short buzz cut: Slightly longer than a number 1, this cut is achieved with a clipper guard of 1/4 inch (6 mm). It provides a bit more hair length while still maintaining a short, uniform look.

  3. Crew cut: With a clipper guard of 3/8 inch (10 mm), this haircut leaves the hair short but slightly longer than a buzz cut. It typically follows the shape of the head and can be styled in various ways.

  4. Short fade: This is a popular haircut where the hair gradually tapers from longer on top to shorter on the sides and back. The length on top can vary, but the sides and back are often cut with a clipper guard of 1/2 inch (13 mm).

  5. Medium fade: Similar to a short fade, the medium fade features a more pronounced taper from top to bottom. The sides and back are cut shorter, usually with a clipper guard of 1/4 inch (6 mm) or less.

  6. Long fade: This fade leaves even more length on top compared to the medium fade, while still maintaining a noticeable contrast with the shorter sides and back. The sides and back are typically cut with a clipper guard of 3/8 inch (10 mm) or less.

  7. Tapered cut: This haircut gradually tapers the hair from top to bottom, with more length on top and shorter sides and back. The transition is blended smoothly, and the length on top can vary according to personal preference.

  8. Scissor cut: Scissor cuts are achieved using shears instead of clippers. This versatile style allows for more texture and layering. The length can vary depending on the desired look.

It’s important to note that the specific length associated with each number can vary depending on the clipper or guard used, as well as individual preferences and regional variations. It’s always a good idea to communicate your desired length to your hairstylist or barber for the best results.


Choosing the Right Haircut Number

Selecting the appropriate haircut number depends on various factors, including your personal style, hair texture, and facial features. Here are a few considerations to keep in mind:

  1. Face Shape: Different haircut numbers can complement specific face shapes. For example, shorter hair lengths like hair number 3 or hair number 0 can accentuate facial features, while longer hair lengths like haircut number 7 can help soften angular face shapes.

  2. Hair Texture: The texture of your hair plays a crucial role in determining the suitability of a particular haircut number. Curly or wavy hair tends to appear shorter when dry, so opting for a slightly longer hair number might be necessary. Straight hair, on the other hand, is more easily managed at shorter lengths.

  3. Lifestyle and Maintenance: Consider your daily routine and the level of maintenance you are willing to commit to. Shorter haircuts generally require less styling and upkeep, while longer haircuts might demand more time and effort to maintain their desired appearance.

Choosing the Right Haircut Number

When choosing a haircut and face style, it’s essential to consider your face shape and personal preferences. Different face shapes suit different hairstyles, so let’s go through some popular face shapes and corresponding haircut suggestions:

  1. Oval Face:

    • This face shape is versatile and suits various hairstyles.
    • You can try a classic short bob, layered cuts, or even long waves.
    • Avoid heavy bangs that cover your forehead; it’s best to keep your face visible.
  2. Round Face:

    • For a round face, opt for haircuts that add length and create angles.
    • A long layered haircut or a shoulder-length lob can be flattering.
    • Side-swept bangs can also help elongate the face.
  3. Square Face:

    • Soften the angles of a square face with wavy or curly hair.
    • A layered cut with side-parted bangs can complement your face shape.
    • Avoid straight, blunt cuts that accentuate the squareness.
  4. Heart-Shaped Face:

    • Try haircuts that add width at the jawline to balance a pointed chin.
    • Chin-length bobs or layered cuts with volume at the bottom can look great.
    • Side-swept bangs or wispy bangs can soften the forehead.
  5. Diamond Face:

    • Diamond faces are versatile, similar to oval faces.
    • Experiment with various styles, like a textured pixie, layered bob, or long curls.
    • Avoid excessive volume at the top, as it can overemphasize the narrow forehead.
  6. Oblong/Rectangular Face:

    • Add width to an oblong face with layered cuts that end around the jawline.
    • Long side-swept bangs can help shorten the appearance of the face.
    • Avoid very long, straight hairstyles that may elongate the face further.


Understanding hair numbers and their corresponding lengths is essential for achieving the haircut you desire. Whether you’re aiming for a stylish short haircut like hair number 3, a textured medium-length look with hair number 5, or a more voluminous hairstyle using haircut number 7, knowing the options available empowers you to make informed choices. Additionally, the versatile hair number 0 offers a distinct, close-cropped style. By considering factors such as face shape, hair texture, and maintenance requirements, you can confidently communicate your preferences to your hairstylist. So, go ahead and explore the world of hair numbers to find the perfect cut that suits your style and personality!


1. Are hair numbers the same across all barbershops?

Hair numbers generally follow a standardized system, but there might be slight variations between barbershops. It’s always best to communicate your desired length and style clearly to ensure the desired results.

2. Can I change my hair number during the haircut?

While it’s possible to change your hair number during the haircut, it’s advisable to discuss any modifications with your hairstylist beforehand. They can guide you on the best options based on your hair type, face shape, and desired style.

3. Will a hair number 0 suit everyone?

Hair number 0 requires a certain level of confidence and suits individuals who prefer a minimalist and clean look. Consider your personal style, facial features, and lifestyle before opting for a hair number 0.

4. Can I style my hair with hair number 3?

Yes, hair number 3 provides enough length to experiment with different styles. You can use hair products, such as pomade or wax, to achieve your desired look.

5. How often should I get a haircut with hair number 5?

The frequency of haircuts depends on individual hair growth rates and personal preferences. As a general guideline, getting a haircut every 4-6 weeks can help maintain the desired length and style with hair number 5.

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