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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.
Runs in your browser. Your photo never leaves your device.
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.
Related tools
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.