Measure facial thirds from a front-facing photo
Facial thirds are the horizontal bands of a face. This page measures facial thirds from one front-facing photo and reports the middle band divided by the lower band, to two decimal places. The reading is a ratio in that photo, not a judgment of the person.
Measure your facial thirds
Tick the box above to choose a photo.
Your photo stays on your device. It is analyzed in your browser and never uploaded.
For the best result
- Face the camera straight on and keep your head level.
- Keep a neutral expression with your lips closed.
- Use even light, and keep hair and glasses off your face.
You get this facial thirds reading free, without an account, and the photo stays on your device.
What facial thirds are
Facial thirds, in the old description, cut a face into three horizontal bands of about the same height. The upper third runs from the hairline to the brow. The middle third runs from the brow to the base of the nose. The lower third runs from the base of the nose to the bottom of the chin. People also look this up as the rule of thirds face. That name means the face split, not the grid a photographer uses to place a subject in a frame.
The traditional claim is that facial thirds are roughly equal. This page does not test all three bands. A facial thirds reading here is the middle third divided by the lower third. Near 1.00, the two bands are close in height. Above 1.00, the middle third is longer. Below 1.00, the lower third is longer. That number describes the photo. It is not a judgment of the person.
What this facial thirds calculator measures
Pick the men's version or the women's version. Confirm you are 18 or older and that the photo is of you before the page accepts a picture. It does not verify either claim. Upload a front-facing photo you already have, or take one with the camera.
The browser measures facial thirds on the device. MediaPipe finds the points. The middle third runs from between the brows to the base of the nose. The lower third runs from the base of the nose to the bottom of the chin. The facial thirds ratio is the first distance divided by the second, to two decimal places. Three horizontal lines are drawn on the photo: the brow line, the base of the nose, and the bottom of the chin. The page sets that facial thirds reading next to the reference range for the version you picked.
This ratio is one of twelve in a psl rating, in the Harmony category. The psl calculator lists each ratio and the range for men and for women. This page returns the facial thirds ratio only. The same photo on the same device gives the same facial thirds reading. A different photo, different light, or a different angle can change it.
Why the upper third is left out
The upper third runs from the hairline to the brow. A facial thirds description with three equal bands includes that band. This facial thirds calculator does not measure the upper third, and it does not draw a hairline.
A hairline changes with the person and with the hairstyle. Bangs, a hat, a high hairline, and a low one do not give the browser a stable point. The brow, the base of the nose, and the chin are steadier, so facial thirds here use only the two bands those three lines mark. Leaving the upper third out is a limit of the photo and of the tool. It is not a finding about the hairline. There is no separate number for the upper face.
Men's and women's facial thirds ranges
The men's facial thirds range is 0.95 to 1.05. The women's facial thirds range is 0.96 to 1.08. Both ends are inside the range. A men's facial thirds reading of 1.06 is outside the men's range. A women's facial thirds reading of 0.95 is outside the women's range.
The women's facial thirds range sits a little higher than the men's. The lower third is usually shorter in women, and a shorter lower third raises the ratio. Pick the version that matches you. The other version's facial thirds range is the wrong comparison.
The page does not rank a facial thirds reading or praise it. A number outside the range is still two distances in one photo. This page will not call an outside number a defect, and it will not tell you to move it into the range.
What changes a facial thirds reading
Chin down or chin up can move a facial thirds reading. A camera below the face or above it changes the vertical distances, and facial thirds are those distances. An open mouth moves the chin and the lips, so the lower line used for facial thirds can shift. A chin pushed forward puts the bottom of the chin in a different place in the frame. The lower third in that facial thirds reading uses that place.
A wide lens held close to the face stretches the middle, where the nose sits. That stretch can change facial thirds. A beard that covers the chin outline hides the contour the bottom line needs, so that facial thirds reading follows a hidden edge. Light can change a facial thirds reading when it hides the chin or the base of the nose.
The same photo on the same device gives the same facial thirds reading. Do not keep the facial thirds result from the frame you like and drop the other one.
What facial thirds cannot tell you
Facial thirds cannot tell you whether a face is attractive, and they cannot rank one person against another. A facial thirds reading is a geometric estimate of two bands in one photo. It is not a judgment of the person.
This page does not recommend surgery, injections, or any other treatment, and it does not describe a method aimed at the ratio. If you have a medical concern about your jaw, your bite, or your nose, ask a licensed professional. A facial thirds number from a phone photo is not a finding for that visit.
The page does not generate a face, and it does not edit the photo. There is no altered image. The lines mark points already in the frame. Eye-corner slant is a separate photo reading, on the canthal tilt page, and it is not part of facial thirds.