Guide to Haircut Length Numbers | Cutters Yard (2024)

Telling your barber what you want doesn’t have to be difficult. But the key to leaving the salon with the haircut you had in mind is to know what to ask for. After all, your barber might be a whizz with a pair of scissors but they’re (probably) not a mindreader.

This is where knowing your haircut length numbers comes in handy. But what are the numbers in haircuts? Let’s dive in.

Haircut Length Numbers: The Basics

Let’s start with the basics. Haircut numbers are connected to the plastic guards that are attached to electric hair clippers. The majority of hair trimmers come with eight different sizes of guard.

The clipper guard AKA haircut number refers to the length of hair that is left after the clipper has been used, with each number representing one eighth of an inch of hair.

This means that the lower the number, the shorter the hair, and vice versa.

So what number do you need to ask for to get the haircut you want?

What Are the Numbers in Haircuts?

If you ask your barber for a number one cut, you are asking them to cut your hair so it is an eighth of an inch long. If you ask for a number eight cut, the hair left on your head will be one inch.

Here are all the haircut length numbers and their corresponding clipper guard size:

  • Zero: 1/16 of an inch
  • One: 1/8 of an inch
  • Two: 1/4 of an inch
  • Three: 3/8 of an inch
  • Four: 1/2 an inch
  • Five: 5/8 of an inch
  • Six: 3/4 of an inch
  • Seven: 7/8 of an inch
  • Eight: 1 inch

How Do Haircut Numbers Work?

Let’s break down the styles that asking for a particular haircut length number will result in so you know exactly what to ask your barber.

Zero haircut

You don’t get any shorter than the zero haircut. A zero cut means your barber won’t use a clipper guard. This hairstyle is basically a skin fade or a shaved head.

Number one haircut

Only a fraction longer than a zero cut, a number one haircut is a very short buzz cut. The number one clipper guard is also used to create faded sides.

Number two haircut

Although still very short, the popular number two clipper guard is also used for buzz cuts and fades. However, because the hair is a quarter of an inch long the scalp is not exposed in the way that it is with a zero or one cut. This makes it a good cut for guys who have thin hair or who are balding.

Number three haircut

Also a popular choice for men who like to keep it short and neat, the number three is the highest number used in fades. Again, it’s a good choice for anyone with thin hair, although a three also works well with thicker hair types.

Number four haircut

If you’re looking for something a little closer to a crew or brush cut as opposed to a fade, try asking for a number four haircut. Less edgy than the numbers that precede it, size four clipper guards allow for a slightly longer and more conventional cut.

Number five haircut

Ask for a number five if you want a longer cut that can be styled. The number five haircut length will result in a look that is groomed and slightly more classic than the four. It’s also a good cut to ask for if you want the sides of your hair to be tapered without the extreme contrast of a zero or skin fade.

Number six haircut

We’re now moving firmly out of buzz cut and into crew cut territory. Like the five, this is a hairstyle that can be brushed and styled. The size six clipper guard is also often used to create a more subtle tapered side.

Number seven haircut

Barbers usually opt for the size seven clipper guard for customers who are looking for a crew cut that can be styled. It’s similar to the six haircut length number before it, just with that added extra one eighth of an inch of hair.

Number eight haircut

If you’re still looking for a stylish men’s haircut that is on the shorter side but you want more freedom to play around and create different styles – for example a side parting or a slicked back look – a number eight cut will leave you with a full inch of hair.

How to Prepare for Your Next Trim

Now you know what the numbers in haircuts are and how they work, there’s just one other thing you need to be aware of.

Making sure your scalp is healthy is a must for any type of haircut, regardless of length. But it is especially important if you’re going for a zero or number one haircut length as both of these are so short, the scalp is visible through the hair.

We recommend using a shampoo such as Aveda’s Invati Men™ Nourishing Exfoliating Shampoo which not only refreshes hair, but the scalp too.

Follow this with the Invati Men™ Scalp Revitalizer which invigorates the scalp and instantly makes hair look thicker, making it ideal for those with thinner hair who still want to go short.

Book Your Next Cut at Cutters Yard

Our barber services in London Bridge and Southwark are tailored to men who know what they want when it comes to a great looking haircut.

And now you have everything you need to know about how haircut numbers work, there’s nothing stopping you from booking your next appointment.

Guide to Haircut Length Numbers | Cutters Yard (2024)

FAQs

Guide to Haircut Length Numbers | Cutters Yard? ›

How Long is a Number 3 Haircut? The Number 3 length is 3/8 of an inch or 10mm. This is a great mid-length option that is stylish yet versatile. While it keeps your hair short and neat, it's not too closely cropped, giving you plenty of options for different hairstyles.

How long is a number 3 haircut? ›

How Long is a Number 3 Haircut? The Number 3 length is 3/8 of an inch or 10mm. This is a great mid-length option that is stylish yet versatile. While it keeps your hair short and neat, it's not too closely cropped, giving you plenty of options for different hairstyles.

How short is a number 4 haircut? ›

Number 4 haircut – If you're looking for a medium-length cut, the number 4 guard length is the way to go. It measures at ½ an inch and is a popular choice for those who want a little more hair to work with.

What does 1, 2, 3, 4, 5 mean in haircuts? ›

Number 1 clipper: 1/8 inch. Number 2 clipper: 1/4 inch. Number 3 clipper: 3/8 inch. Number 4 clipper: 1/2 inch. Number 5 clipper: 5/8 inch.

How long is a number 7 haircut? ›

The Number 7 haircut length is a generous 7/8 inch or 22mm— a versatile cut that seamlessly marries a well-groomed look with a gamut of styling choices. This substantial length is optimal for those yearning for a polished yet laid-back style, permitting your hair to make a statement without appearing unkempt.

Is a number 2 haircut too short? ›

Number two haircut

Although still very short, the popular number two clipper guard is also used for buzz cuts and fades. However, because the hair is a quarter of an inch long the scalp is not exposed in the way that it is with a zero or one cut. This makes it a good cut for guys who have thin hair or who are balding.

What does a number 6 haircut look like? ›

The #6 buzz cut is marked by its uniform length all over the head, which is one of its defining traits. This uniformity gives it a neat, cohesive look that's both sharp and clean. The length is long enough to soften the features of the face, yet short enough to maintain that classic, edgy buzz-cut appeal.

What does a number 3 haircut look like? ›

An example number 3 haircut is a crew cut. You can have the sides cut short with a number 3 but leave the top longer. The sides and back in this hairstyle are usually faded, while the top is left with more length and styled how you'd like it.

What does a number 5 haircut look like? ›

A Number 5 haircut leaves the hair at a length of 5/8 inch, or approximately 16mm. This haircut is considered medium-short, offering a clean-cut look while still being long enough to provide some styling flexibility.

What is the numbering system for haircuts? ›

Ranging from 0 to 8, where 0 is the shortest setting (without the clipper guard) and 8 is the longest setting, the stylist is then able to determine what length to cut the sides of your hair and from that length, determine how best to cut the rest of your hair to your desired haircut and to best suit your features.

What does a number 8 haircut look like? ›

The way a number 8 haircut looks depends on how you style it. A number 8 haircut all over is categorized by an inch of hair on the entirety of the head. Whereas a number 8 on top has an inch of hair on the top of the head paired with shorter sides, creating a number 8 haircut fade style.

How long is a No 5 haircut? ›

A number 5 haircut leaves five-eighths of an inch of hair. This haircut number allows for more texture and styling options, as the hair is long enough to be brushed and groomed in different ways. It's great for those who want a short yet textured look.

How long is a number 3 on Clippers? ›

Hair Clipper Sizes in MM: A Quick Guide
Haircut NumberLength in InchesLength in Millimeters
Number 2 Haircut1/4 in6 mm
Number 3 Haircut3/8 in10 mm
Number 4 Haircut1/2 in13 mm
Number 5 Haircut5/8 in16 mm
5 more rows
May 10, 2024

How long is a 3 buzz cut? ›

The Basics of Buzz Cut Lengths

#2 Guard: Leaves 1/4 inch of hair. #3 Guard: Leaves 3/8 inch of hair. #4 Guard: Leaves 1/2 inch of hair.

What does a 4 look like haircut? ›

A Number 4 haircut all over looks even and balanced, with the same 1/2 inch length maintained uniformly across the entire head. This gives a neat and tidy appearance. A Number 4 haircut can also be styled with a fade or a taper on the sides, where the hair gradually shortens from the top to the sides and back.

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