What angle is a graduated bob?

A classic graduated bob is typically cut at a 45-degree angle from the baseline. Steeper angles (60-75°) create more dramatic stacking and volume. Shallower angles (15-30°) create subtle graduation with a smoother finish. The angle refers to the elevation of the hair from the head when cutting each section.

What is weight line in a graduated cut?

The weight line is where the bulk of the hair sits and creates the heaviest visual line in the haircut. In a graduated bob, the weight line sits above the perimeter length because the stacked layers build up weight. The cutting angle determines how high the weight line sits — steeper angles push it higher.

How does graduation differ from layering?

Graduation builds weight above the perimeter by cutting at angles below 90 degrees — hair gets progressively longer from top to bottom within each section. Layering removes weight by cutting at 90 degrees or above — each layer is the same length or shorter than the layer below. Graduation adds bulk; layering removes it.

What is stacking in a graduated cut?

Stacking refers to the build-up of weight created when hair is cut at a graduated angle. The inner layers are shorter than the outer layers, causing hair to push outward and create volume and shape. The steeper the cutting angle, the more stacking occurs, creating a fuller, more rounded shape at the back.

CutCalcs

Graduation Calculator — Angles & Weight Distribution

Determine cutting angles and weight distribution for graduated bob styles.

Cutting Angle

Typical graduated bob: 45°

Base Length

Length at the nape/baseline

Head Shape

Number of Sections

Guide sections from nape to crown

How We Calculate This

This calculator uses trigonometry to determine the weight build-up from a graduated cutting angle, showing the length at each section from the nape to the crown.

The formula

Build-up = Base length x tan(angle) x Head curve factor

Section length = Base length + (Build-up x Section position)

0° = one-length (no graduation)
45° = classic graduated bob
90° = fully layered (no weight build-up)

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always perform a strand test before chemical services.