What is an ideal Gonial Angle in degrees?

The gonial angle is the angle formed where the vertical mandibular ramus (below the ear) meets the lower body of the jaw (running to the chin). In craniofacial anthropometry and PSL scoring, an angle between 118° and 128° produces a crisp, low-set jaw corner, whereas angles above 132° read as a steeper, more downward-sloping jawline.

What is a good Bigonial-to-Bizygomatic (Jaw-to-Cheekbone) Ratio?

Bigonial-to-Bizygomatic ratio divides lower jaw width at the gonions by cheekbone width at the zygomatic arches. Male benchmarks typically fall between 82% and 90% (square lower third), while female benchmarks typically sit between 74% and 82% (tapered heart/oval ogee curve).

Should I also test my side profile for gonial angle?

Yes. A frontal photo measures projected bigonial flare and frontal jaw corner angle, while a true 90-degree lateral photo measures the sagittal ramus-to-mandibular-plane gonial angle and Ricketts E-line. After running this frontal calculator, you can run our AI Jawline Analyzer or Side Profile Analyzer for a complete multi-angle assessment.

ON-DEVICE ANTHROPOMETRY · GONIAL ANGLE CALCULATOR

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Free Gonial Angle & Jawline Ratio Calculator.

Upload one photo to measure your Projected Gonial Angle (°) (mandibular ramus-to-body jaw corner), Bigonial-to-Bizygomatic Jaw Width Ratio, Chin-to-Philtrum Ratio and Lower Facial Third % on-device.

Left, Right & Average Gonial Angle in degrees vs the 118°-130° ideal mandibular corridor
Bigonial-to-Bizygomatic Jaw Taper (%) and Chin-to-Philtrum vertical projection ratio
Interactive mandibular landmark overlay on your photo · 100% on-device
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fWHR1.85–2.00x

Cheek width ÷ brow-to-lip

Midface0.95–1.05x

IPD ÷ pupil-to-upper-lip

ESR0.44–0.47

Interpupillary ÷ face width

Thirds33 / 33 / 33%

Upper · Middle · Lower

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WHERE TO NEXT

See how your facial ratios translate into your overall score

PSL Score Calculator

Combine your measured ratios with a calibrated AI read across Harmony, Dimorphism, Angularity and Feature Balance.

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Golden Ratio Face Test

See how your facial proportions compare against classical phi (1.618) harmony targets.

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READ THE GUIDES4 related research guides

fWHR & midface ratio explainedReference ranges, roll correction and why close selfie lenses distort both ratios.

12 key facial measurementsHow thirds, fifths, ESR, canthal tilt and chin-to-philtrum work together.

Golden ratio of the faceWhere 1.618 phi proportions apply and where modern anthropometry differs.

The PSL scale explainedHow structural harmony and angularity map onto the 0.25-8.0 scale.

All guides →

FAQ

What is a good Facial Width-to-Height Ratio (fWHR)?

Facial Width-to-Height Ratio (fWHR) divides bizygomatic cheekbone width by upper-face height (mid-brow to upper lip). Most adult faces fall between 1.75x and 2.05x, with looksmaxxing and anthropometry references commonly citing 1.85x-2.00x as a balanced compact frame.

What is the Eye Separation Ratio (ESR) and Midface Ratio?

Eye Separation Ratio (ESR) is interpupillary distance divided by bizygomatic face width - commonly cited between 0.44 and 0.47 (44%-47% of face width). Midface Ratio divides interpupillary distance by the vertical distance from the pupil line to the upper lip, where ~0.95x-1.05x indicates a balanced 1:1 central triangle.

How accurate are 2D photo facial ratio measurements?

Because ratios divide one distance by another in the same plane (and angles are scale-invariant), they do not require a millimeter ruler. However, camera distance (selfie lens distortion under 50 cm) and head pitch (tilting chin up or down) can shift vertical ratios like midface ratio and fWHR by 5-8%. Use a straight-on photo taken at arm's length or further.

Is my photo uploaded to a server?

No. All facial landmarks and 12 ratios are computed 100% locally inside your browser.