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Midface Ratio Calculator
Wondering whether your midface looks long or compact? Measure pupil span divided by the height from your pupil line to your upper lip. See both distances on your photo and understand what the number can tell you.
Drop a photo, paste one, or choose a file
Straight-on, whole face visible, even light. JPG, PNG or WebP.
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Sample result
Read the lines
Two distances. One ratio.
The blue line measures the distance between the pupil centres. The red line measures the height from that line to the top of the upper lip, after correcting sideways head tilt.
- 0.80
- 60 px ÷ 75 px. The height is greater than the pupil span.
- 1.00
- 60 px ÷ 60 px. The two distances are equal.
- 1.20
- 60 px ÷ 50 px. The height is smaller than the pupil span.
A lower ratio can come from more vertical height, a narrower pupil span, or both. It does not diagnose a “long midface” or explain which feature causes the appearance.
Midface ratio, fWHR and facial thirds are different measurements.
This calculator uses pupil span and pupil-to-lip height. fWHR uses face width and upper-face height. Facial thirds divide the face vertically. Compare the same definition each time, including which distance is the numerator.
How it is measured
Pupil span ÷ pupil-to-upper-lip height.
The tool locates the pupil centres and the top of the upper lip, levels the pupil line to correct sideways head roll, then divides the horizontal pupil span by the vertical pupil-to-lip height. This is the same midface definition used in Symmi's fWHR and facial-ratios tools. Other sources may use different landmarks or the reciprocal ratio.
- Pupil span (A)
- Distance between the pupil centres after head-roll correction. Shown by the blue line.
- Pupil-to-lip height (B)
- Vertical distance from the levelled pupil line to the top of the upper lip. Shown by the red line.
- Midface ratio
- A divided by B. Lower means more height relative to pupil span; higher means less. It is not an attractiveness score.
- Pixels and scale
- The two distances are in pixels of this photo, not millimetres. Resizing both distances equally leaves the geometric ratio unchanged; landmark estimates may still shift slightly.
Measure it yourself
How to calculate your midface ratio yourself
- 1Take a straight-on photo, eyes open and looking at the camera, head level.
- 2A: measure the distance between the centres of your two pupils.
- 3B: measure straight down from the line through your pupils to the top of your upper lip.
- 4Divide A by B. For example 62 mm ÷ 60 mm = 1.03.
- 5Check which formula a source uses before comparing: some divide B by A instead, which gives about 0.97 for the same face.
Skip the ruler: the free tool above does it from one photo in about 30 seconds ↑
What's normal
Midface ratio ranges
The ratio describes proportion only. It is not an attractiveness score.
- Under 0.95
- Reads as: Longer midface
- Why: More height relative to the pupil span.
- 0.95 to 1.15
- Reads as: Balanced
- Why: The band the Symmi app scores against.
- Over 1.15
- Reads as: Compact midface
- Why: Less height relative to the pupil span.
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.
Farkas LG, Katic MJ, Forrest CR, et al. (2005). International anthropometric study of facial morphology in various ethnic groups/races. Journal of Craniofacial Surgery. PubMed 16077306
Midface widths and heights measured across ethnic groups; normal ranges vary by population.
- 2.
Pallett PM, Link S, Lee K (2010). New "golden" ratios for facial beauty. Vision Research. PubMed 19896961
Eye spacing and eye–mouth distance relative to face size, and which values looked most attractive.
- 3.
Bouhadana G, Gornitsky J, Saleh E, et al. (2022). Expanding the classic facial canons: quantifying intercanthal distance in a diverse patient population. Plastic and Reconstructive Surgery Global Open. PubMed 35475286
Inner-eye-corner distance measured in a diverse population.
- 4.
Kartynnik Y, Ablavatski A, Grishchenko I, Grundmann M (2019). Real-time facial surface geometry from monocular video on mobile GPUs. arXiv. arXiv:1907.06724
The face-mesh model that places the 468 surface landmarks this tool measures from.
- 5.
Ablavatski A, Vakunov A, Grishchenko I, et al. (2020). Real-time pupil tracking from monocular video for digital puppetry. arXiv. arXiv:2006.11341
The iris model that adds 10 eye landmarks (478 in total), used for pupil-based reference lines.
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
Facial Harmony Test
How many of eight proportions sit inside their bands.
PSL Score Test
A measured 1–8 PSL rating with your tier.
fWHR Calculator
Compare face width with upper-face height.
Facial Thirds Test
See the upper, middle and lower vertical sections.
Facial Ratios Calculator
See this ratio alongside twelve other readings.
FAQ
What is a midface ratio?+
On this page it means pupil-to-pupil distance divided by the vertical height from the pupil line to the top of the upper lip. Always check the formula before comparing numbers: midface has other meanings in anatomy and on forums.
Does a low ratio mean I have a long midface?+
It means the measured height is larger relative to your pupil span. Either distance can influence the result. A single ratio cannot establish why your face looks a certain way or diagnose facial anatomy.
What is an ideal midface ratio?+
This tool does not assign an ideal or a pass/fail grade. A value of 1.00 means the two distances are equal. The 0.95–1.15 interval shown in some other Symmi tools is a display convention, not a clinical normal range or a target everyone should match.
Is this the same as fWHR or facial thirds?+
No. fWHR uses face width and upper-face height; facial thirds describe vertical sections of the face. This ratio uses pupil span and pupil-to-lip height.
Why does my ratio change between photos?+
Camera distance, face turn, looking up or down, expression and landmark placement can change it. Sideways head roll is corrected here, but perspective and other pose changes are not. Compare straight-on photos taken with the same setup.
Can I use the pixel distances as real-world measurements?+
No. Pixel distances depend on the image size and framing. The ratio is unitless, and this front-photo tool does not measure depth or bone dimensions.
Is my photo uploaded?+
No. Landmark detection, calculation and annotation run in your browser. No account is needed.
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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