Free tool · runs in your browser
Facial harmony is how well the parts of a face fit together: how the thirds stack, how wide the face is against its height, where the eyes sit, how the jaw finishes it. This test measures eight of those relationships on your photo and gives a 0–100 harmony index, with the features in and out of balance named.
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 is never uploaded.
How it is measured
Each of eight readings gets a component from 0 to 1: 1 anywhere inside its reference band, halving for every tolerance step outside it. Components are weighted (symmetry most, eye spacing least) and summed. The harmony index is that weighted sum out of 100: 100 means every proportion sits inside its band in this photo.
Sources
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.
Langlois JH, Kalakanis L, Rubenstein AJ, et al. (2000). Maxims or myths of beauty? A meta-analytic and theoretical review. Psychological Bulletin. doi:10.1037/0033-2909.126.3.390
Meta-analysis: people largely agree on who is attractive, across ages and cultures.
Langlois JH, Roggman LA (1990). Attractive faces are only average. Psychological Science. doi:10.1111/j.1467-9280.1990.tb00079.x
Averaged composite faces were rated more attractive than most individual faces.
Perrett DI, May KA, Yoshikawa S (1994). Facial shape and judgements of female attractiveness. Nature. doi:10.1038/368239a0
The most attractive faces were not simply average, so averageness is only part of the picture.
Rhodes G (2006). The evolutionary psychology of facial beauty. Annual Review of Psychology. PubMed 16318594
Review of the main factors in facial attractiveness: averageness, symmetry and sex-typical features.
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.
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 Ratios Calculator
Thirteen ratios from one photo.
Golden Ratio Face Calculator
Five classical ratios against φ.
Facial Thirds Test
Upper, middle and lower third.
Face Rating
The same readings as a 1–10 score.
PSL Score Test
The same readings on the PSL scale.
Side Profile Analysis
Convexity, nose and jaw angles from the side.
FAQ
In aesthetics, harmony describes proportion between features rather than any one feature: a strong jaw on a long face reads differently from the same jaw on a short face. Measuring it means looking at ratios, which is what this test does.
Above 75 means most readings sit inside their bands; above 90 nearly all of them. Most straight-on photos score between 60 and 90. The breakdown under the number matters more than the number.
No. Harmony is one ingredient. Skin, hair, expression, grooming and how you carry yourself are not measured here and change how a face is seen.
Same eight readings. The face rating maps them onto a 1–10 curve; the harmony index shows the plain weighted share inside the bands.
No. It is processed in your browser and never leaves your device.
A controlled scan, every reading against its ideal band, bone vs trainable, a plan, and a 3D model on Face ID iPhones.