Haircut numbers are clipper guard sizes. Each number is the length of hair the guard leaves: a number 1 leaves 1/8 inch, and each step up adds another 1/8 inch, up to a number 8 at 1 inch. Here's what you need to know before your next haircut.
Haircut numbers at a glance
- Top: Your choice; often a higher number or scissor cut
- Sides and back: Usually a lower number than the top
- Maintenance: Low
- Trim every: 2 to 4 weeks
Why it matters
Knowing the numbers lets you tell a barber exactly what you want, for example a 2 on the sides and a 4 on top, and get the same result every time. Sizes are standard across most clipper brands, with small differences.
Who it suits
Lower numbers (0 to 2) show the scalp and suit strong head shapes and thinning hair. Higher numbers (3 to 8) look softer and darker.
Not sure about your face shape? Find it with the free face shape detector, or read our guide to men's face shapes.
What to tell your barber
- Say the number for the sides and the number for the top.
- Say whether you want the two blended (a fade) or one length.
- If unsure, start with a higher number: it can always go shorter.
- Bring a photo. Barbers use these names differently, and a picture removes the guesswork.
How to style it
Short clipper cuts need no styling.
Clipper guard sizes
- Number 0: no guard: about 1/16 inch, close to skin.
- Number 1: 1/8 inch (3 mm).
- Number 2: 1/4 inch (6 mm).
- Number 3: 3/8 inch (10 mm).
- Number 4: 1/2 inch (13 mm).
- Number 5: 5/8 inch (16 mm).
- Number 6: 3/4 inch (19 mm).
- Number 7: 7/8 inch (22 mm).
- Number 8: 1 inch (25 mm).
Try it before you cut
A haircut takes weeks to grow out. Upload a selfie to the AI hairstyle changer and see different cuts on your own face, next to up to three other styles.
Related haircuts
FAQ
What do haircut numbers mean?
Haircut numbers are clipper guard sizes.
Which should I choose?
Lower numbers (0 to 2) show the scalp and suit strong head shapes and thinning hair. Higher numbers (3 to 8) look softer and darker.
How often does it need a trim?
About every 2 to 4 weeks.
What is a number 2 haircut?
Hair clipped to 1/4 inch (6 mm). It's short, with a little scalp showing on fine or light hair.
What is a number 3 haircut?
Hair clipped to 3/8 inch (10 mm): short, but long enough that the scalp doesn't show on most people.
What is a number 4 haircut?
Hair clipped to 1/2 inch (13 mm), the longest of the common buzz cut lengths.
