Free jaw angle calculator · runs in your browser
Gonial Angle Calculator
The gonial angle is the angle at the corner of your jaw, and the number looksmaxxing forums use for a sharp jawline. Upload one true side photo: your profile is traced automatically, the jaw corner is found, and your gonial angle is measured and drawn on your photo, together with your chin projection and the other profile angles.
Drop a side photo, or choose a file
A true side-on photo: camera at face height, hair off the forehead and jaw, plain background.
Runs in your browser. Your photo never leaves your device.
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Sample result
How it is measured
Two lines meeting at the jaw corner
The gonial angle sits between two lines: the back edge of the jaw running up toward the ear (the ramus) and the lower border of the jaw running forward to the chin. On a side photo the tool traces your outline, places a point at the jaw corner, one up the back of the jaw and one under the chin, and measures the angle between them. Bone sits under muscle and skin, so this soft-tissue angle is approximate; every point can be dragged if hair or a beard hides the jaw.
- Ramus
- The back edge of the jaw, below the ear.
- Gonion
- The jaw corner, where the angle is measured.
- Lower border
- The underside of the jaw, toward the chin.
- Also measured
- Chin projection, E-line, nose and lip angles.
Measure it yourself
How to take the side photo
- 1Turn fully side-on, 90 degrees to the camera, and look straight ahead.
- 2Keep your head level, as if balancing a book. Don't tuck or lift the chin.
- 3Tie long hair back and clear it from the jaw and neck.
- 4Use a plain background and even light so the outline traces cleanly.
Skip the ruler: the free tool above does it from one photo in about 30 seconds ↑
What's normal
What is a good gonial angle?
On soft tissue in side photos, jaw angles often fall around 115 to 130 degrees:
- Under 115°
- How the jaw reads: Very sharp, square and angular
- Notes: The chiseled look forums aim for
- 115° – 125°
- How the jaw reads: Defined
- Notes: A clear jaw corner
- 125° – 130°
- How the jaw reads: Average
- Notes: Common in both men and women
- Over 130°
- How the jaw reads: Soft, steep jaw
- Notes: Often reads as a weaker jaw from the side
Head tilt changes the angle: chin down lowers it, chin up raises it. Keep your head level and compare photos taken the same way.
Sources
What this is based on.
The measurement and its reference ranges come from published research. Studies use different methods and populations, so compare your number with the range shown on this page rather than with other tools.
- 1.
Legan HL, Burstone CJ (1980). Soft tissue cephalometric analysis for orthognathic surgery. Journal of Oral Surgery. PubMed 6932485
Soft-tissue profile analysis, including the facial convexity angle (brow – under-nose – chin).
- 2.
Ricketts RM (1968). Esthetics, environment, and the law of lip relation. American Journal of Orthodontics. PubMed 5238879
Defined the esthetic line from nose tip to chin used to describe where the lips sit.
- 3.
Fitzgerald JP, Nanda RS, Currier GF (1992). An evaluation of the nasolabial angle and the relative inclinations of the nose and upper lip. American Journal of Orthodontics and Dentofacial Orthopedics. PubMed 1456217
The nasolabial angle and the inclinations of the nose and upper lip, measured in adults.
Our own data: how much each reading moves when the same face is photographed again is published on the methodology page. How we choose sources.
Related tools
FAQ
What is the gonial angle?+
The angle at the corner of the jaw, between the back edge of the jaw (toward the ear) and its lower border (toward the chin). A lower angle reads as a sharper, more angular jaw; a higher one as softer.
How do I measure my gonial angle?+
Upload a true side photo above. The tool traces your profile, finds the jaw corner and measures the angle, drawn on your photo. Drag a point if the jaw is hidden by hair or a beard.
What is the ideal gonial angle?+
Forums often aim for about 120 degrees or lower for a sharp jaw. On soft tissue most people measure around 115 to 130 degrees. It is one reading: chin projection and jaw width shape the look as much.
Can you change your gonial angle?+
The bone angle does not change without surgery. What changes how it reads is soft tissue: lower body fat, less puffiness under the jaw and better neck posture all make the jaw corner show more clearly.
Does the gonial angle differ between men and women?+
On average men tend to have a slightly lower, more angular jaw angle, but the ranges overlap a lot. The tool uses the same bands for everyone.
Is my photo uploaded?+
No. Everything runs in your browser and your photo never leaves your device.
One reading here.
Nineteen in the app.
A controlled scan, every reading against its ideal band, bone vs trainable, a plan, and a 3D model on Face ID iPhones.
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