BuzzCut Lab

#1 Guard Size — 3mm (1/8") Buzz Cut

Complete guide to #1 guard size: exact measurements, maintenance schedule, and styling tips. See how many millimeters is a #1 guard and whether it's right for your style.

#1 guard buzz cut - 3mm visual example
Guard Number
#1
Millimeters
3 mm
Inches
1/8"

#1 Guard Characteristics

Scalp Visibility:
Higher scalp visibility
Maintenance:
Every 1-2 weeks
Best For:
Clean, sharp look

Common Questions

A #1 guard is exactly 3 millimeters or 1/8" inches in length.

Compare with adjacent lengths

Not sure if #1 is right? Compare with nearby guard sizes: