midface ratio calculator

What Is Midface Ratio?

The midface ratio compares the vertical height of the midface to the vertical height of the lower face. In practical terms, this gives you a quick way to describe overall facial proportion using simple measurements. People use this type of ratio in aesthetics discussions, photography analysis, orthodontic planning conversations, and personal tracking over time.

Formula Used in This Calculator

This tool calculates:

Midface Ratio = Midface Height / Lower Face Height

It also calculates:

• Midface share of lower+mid region = Midface Height / (Midface Height + Lower Face Height) × 100
• Optional width-to-midface index = Bizygomatic Width / Midface Height (if width is entered)

How to Measure Correctly

Good measurements matter more than perfect math. If your landmarks are inconsistent, your ratio will vary even when your face does not.

Step-by-Step Measurement Tips

• Use a straight-on photo with neutral expression and good lighting.
• Keep your head level (avoid tilt and camera angle distortion).
• Measure in one unit only (all mm, all cm, or all inches).
• Repeat each measurement 2 to 3 times and average the values.
• If possible, use a calibration object (such as a ruler in the same photo plane).

Landmark Definitions

For consistency in this calculator:

• Midface height: from the pupil line to the base of the nose (subnasale region).
• Lower face height: from the base of the nose (subnasale) to the lowest point of the chin (menton).
• Bizygomatic width: widest horizontal distance across cheekbones (optional input).

How to Read Your Result

This calculator gives a descriptive interpretation only. It is not a diagnosis, and there is no single “perfect” number that applies to all people.

• Ratio below 0.90: shorter midface relative to lower face.
• Ratio between 0.90 and 1.10: broadly balanced midface-to-lower-face proportion.
• Ratio above 1.10: longer midface relative to lower face.

These ranges are rough reference bands intended for educational use, not strict standards of beauty or health.

Why People Use a Midface Ratio Calculator

• To compare photos taken over time using the same method.
• To discuss facial proportions in a clearer, numeric way.
• To support styling decisions (glasses fit, beard lines, makeup balance, etc.).
• To complement professional conversations in orthodontics or facial analysis contexts.

Common Mistakes to Avoid

• Mixing units (for example, one value in mm and another in cm).
• Using different photo angles for each measurement point.
• Measuring while smiling, talking, or moving the jaw.
• Overinterpreting tiny differences (e.g., 0.02) that may be measurement noise.

Important Note

Facial ratios are just one way to describe geometry. They do not define attractiveness, personality, health, or worth. If you are considering medical or dental treatment, use this tool as a starting reference and consult a qualified professional for personalized evaluation.