Bigonial width meaning and how to measure it

VerdictEstablished

Bigonial width is the horizontal distance between the angles at either side of your jaw. You can measure that distance from a selfie. It's an established face geometry measurement, useful for describing your lower face rather than scoring its appearance.

Compare it with cheekbone width to understand your outline. That comparison helps separate square or round shapes from heart or diamond shapes. Treat a photo reading as a measurement of that image, not a permanent fact about your face.

Updated 5 November 2026

Bigonial width meaning and how to measure it

At a glance

Term
Bigonial width
Area
Face geometry
Measurable from a selfie
Yes: the horizontal distance between the two jaw angles
Evidence
Established
Related
Bizygomatic width, Gonial angle, Face shape, Jawline definition

What the measurement describes

The distance across your jaw corners describes width, while the corners themselves mark its endpoints. Start by finding those points on either side, then consider the horizontal span between them.

That span becomes more useful beside bizygomatic width, the width across your cheekbones. A jaw-to-cheekbone comparison puts lower-face width in context. Jaw width alone doesn't make the full distinction between a square, round, heart or diamond outline.

How to measure bigonial width from a selfie

Use a selfie in which you can identify both jaw corners. You're measuring the horizontal distance between those landmarks, so first check that you're choosing the intended endpoints.

  • Find the jaw angle on each side of your face.
  • Measure the horizontal distance between those points.
  • Compare that span with cheekbone width in the same image.

If either corner is unclear, don't force a precise reading. Keep the distinction between a number taken from a photo and a fixed measurement of your face.

What established evidence means here

Evidence status: established. Bigonial width names a defined measurement in face geometry, with specific landmarks at either end.

That status doesn't make every selfie reading equally dependable. The common mistake is treating a number from a single photo as a fixed personal fact. Check where the measurement starts and ends before deciding what the result means. The glossary explains related terms you may encounter.

How to use the result

Use the result to describe proportions when exploring your closest face-shape category. The free face-shape finder reads length-to-width and jaw-to-cheekbone ratios on your device and names the closest prototype.

Keep width separate from gonial angle, which describes the angle at the jaw corner. They answer different questions: how far apart the corners sit, and how each corner turns.

Questions people ask

Can you measure bigonial width from a selfie?
Yes. Measure the horizontal distance between the jaw angles on either side, provided you can identify both corners.
Does bigonial width tell you your face shape?
It helps when you compare it with cheekbone width. The relationship is more useful for describing your outline than jaw width alone.
Is bigonial width the same as gonial angle?
No. Bigonial width measures the distance between your jaw corners; gonial angle describes the angle at a corner.

Written from the measurements and ingredient facts on this site, then checked for the usual mistakes. Not medical advice.

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