A guide to beard length in millimetres
A descriptive chart of common beard lengths from zero to seventy millimetres, how barbers name each stage, and the simple tools used to manage them.
Zero to two millimetres is stubble. The skin remains visible underneath, and the individual hairs stand stiffly off the face. No tool is needed at this stage because the hairs are too short to catch the teeth of a comb or the bristles of a brush. Any maintenance here belongs entirely to whatever razor or trimmer you use at your sink.
Between three and five millimetres sits the heavy stubble range. The hair begins to show its natural grain across the jaw, yet it lacks the length to bend under a comb. An oval boar bristle brush held in the palm can be swept across the skin to clear loose skin flakes, but a comb will still pass through empty air without snagging a single strand.
Six to twelve millimetres is commonly called a short beard. At this depth, the hairs lie flat against one another and create continuous surface coverage. The fine bank of teeth on a wooden dual sided comb can work through this length once a day, while a bristle brush works well to train the direction of the grain after washing.
Thirteen to twenty-five millimetres is the medium band, or roughly one inch of growth. The hair now lifts away from the surface of the cheeks and takes on a shape of its own. Both banks of a dual sided comb become useful: the wide side separates the deeper sections, and the fine side smooths the outer layer alongside a round tin of balm that softens in the hands and sets on the hair.
Twenty-six to forty millimetres marks the transition to a full beard. Hairs at this depth curl and tangle easily during sleep. Morning combing with the wide teeth of a comb becomes necessary to clear knots before small stainless steel scissors can trim stray hairs that stick out past the perimeter.
Forty-one to seventy millimetres and beyond is long beard territory. The hair hangs below the jawline under its own weight, requiring regular passes with wide wooden comb teeth to stay aligned throughout the day. A palm brush remains handy for smoothing the outer surface, but the deeper layers rely entirely on wide-spaced teeth.
Both boxes are listed piece by piece on one comparison page.