Free · No Signup

Chin Ratio Analyzer

Upload your photo to measure your chin height and width proportions. Find out if you have an ideal, weak, or strong chin from the front view.

Upload a front-facing photo

JPG, PNG or WEBP · Max 10MB · Front-facing, no tilt

What makes a well-proportioned chin?

The chin anchors the lower face. A well-proportioned chin has enough height to balance the lips and nose, a width that fits the jaw, and enough forward projection to give the face a clear profile. A chin that's too short or set back (recessed) can make the nose look larger and the jawline weaker; a chin that's very long can make the lower face look heavy.

This free chin ratio analyzer measures your chin's height and width from a front-facing photo and tells you whether it's well-defined, average, long or short.

How the chin ratio analyzer works

The analyzer runs Google's MediaPipe Face Mesh in your browser (your photo isn't uploaded) and places landmarks on your lower lip, chin, jaw and the base of your nose. It measures two ratios:

RatioFormulaTargetWeight
Chin heightLower lip to chin ÷ base of nose to chinAbout 0.4555%
Chin widthChin width ÷ jaw widthAbout 0.5045%

Chin height shows how much of your lower third the chin takes up. A ratio around 0.45 means the chin is a little under half the distance from the base of your nose to the bottom of your face.

Chin width compares the width of your chin with the width between your jaw angles. A chin about half as wide as the jaw tapers neatly; a much wider chin looks square, and a much narrower one looks pointed.

ScoreResult
85–100Well-defined chin
68–84Good chin proportion
52–67Average chin
Below 52Long chin, or short/recessed chin

If your score is below 52, the result tells you which way you lean: a chin height ratio above 0.5 is classed as a long chin, and below that as short or recessed.

Chin projection and the side profile

How far your chin projects forward is best judged from the side. A common reference is the E-line (esthetic line) described by orthodontist Robert Ricketts: a line from the tip of the nose to the front of the chin, with the lips sitting slightly behind it. A chin that sits well behind this line is often described as weak or recessed.

This analyzer works from a front-facing photo, so it measures chin height and width rather than projection. A short chin height on the front view often goes with a recessed chin in profile, which is why short and recessed share a label here.

Weak chin vs double chin

These are often confused:

  • A weak (recessed) chin is structural — the chin bone sits further back or is smaller.
  • A double chin is soft tissue — fat or loose skin under the chin.

A weak chin can make a double chin more noticeable, because there's less bone to support the skin under the jaw. Losing weight improves a double chin but doesn't change chin structure.

How to improve your chin

  • Posture. Forward head posture shortens the neck–chin angle and makes the chin look weaker.
  • Weight loss reduces a double chin and sharpens the area under the jaw.
  • Facial hair. A beard can add visual length and projection to a short chin.
  • Medical options. Chin filler adds projection non-surgically; chin implants and sliding genioplasty change the bone structure permanently. These should be done by a board-certified specialist.

Mewing and chin exercises don't change chin bone structure in adults.

Tips for an accurate chin measurement

  1. Keep your head level — tilting your chin up or down changes the height ratio.
  2. Keep your lips closed and relaxed.
  3. Shave or trim a beard that covers your chin and jaw.
  4. Take the photo from arm's length or further.

Frequently asked questions

What is the ideal chin proportion?

This analyzer targets a chin height of about 45% of the lower third (from the base of the nose to the chin) and a chin about half as wide as the jaw.

How do I know if I have a weak chin?

A weak chin sits further back than the lips when you look at your side profile — often behind the line from your nose tip to your chin. From the front, a short chin height is a common sign. This analyzer classes chins with a low score and a short height ratio as short or recessed.

Can you fix a weak chin without surgery?

Chin filler can add projection without surgery, and a beard can make the chin look stronger. Exercises and mewing don't change chin bone structure.

What is the difference between a weak chin and a double chin?

A weak chin is a bone-structure feature — the chin is small or set back. A double chin is fat or loose skin under the chin. Weight loss helps a double chin but doesn't change a weak chin.

Is the chin ratio analyzer free?

Yes. It's free, needs no signup, and runs in your browser.