Mouth-to-Nose Ratio
Mouth width relative to nose width — how the two central features balance against each other.
| Reference value | 0.843 mouth width ÷ nose width |
|---|---|
| Weight in composite | 6% |
| Category | Nose |
| Note | Sub-1.0 is normal on this landmark set. |
Two features measured against each other
Rather than measuring either feature against the whole face, this compares them directly. A mouth substantially wider than the nose reads as balanced; a mouth close to nose width tends to read as narrow, and the effect is more noticeable in profile-neutral, front-facing views than in photographs taken at an angle.
Why the reference sits below 1.0
MogTracker divides mouth width at the commissures by alar width, referencing 0.843. That number surprises people who expect something above 1.0, and the reason is the same landmark inflation described on the nose width page: because the measured nose is wider than the anatomical one, the ratio comes out lower than clinical figures suggest.
A floor that had to be lowered
The accepted floor for this metric was lowered deliberately after real scans confirmed that ordinary faces produce sub-1.0 ratios on this landmark set — an earlier, tighter range scored normal faces near zero and was wrong. Its 6% weight puts it mid-pack. It moves if you change either feature, so it is worth reading alongside nose width rather than on its own.
How 123,813 people score on mouth-to-nose ratio
Most scans sit in the upper bands, which is the intended outcome of a correction rather than a coincidence. An earlier version of this metric used a range borrowed from clinical figures, and it scored ordinary faces near zero because the landmark set does not measure what those figures measure. The distribution you see now is what the metric looks like once the range matches the measurement.
| Score band | Share | % | Scans |
|---|---|---|---|
| 0–19 | 3.5% | 4,346 | |
| 20–39 | 4.0% | 4,933 | |
| 40–59 | 7.6% | 9,460 | |
| 60–79 | 16.9% | 20,908 | |
| 80–100 | 68.0% | 84,166 |
Mean 81.15 out of 100 — 4th highest average of the 16 metrics. Figures from MogTracker's own scans, captured 2026-08-14.
How to improve your mouth-to-nose ratio
Mouth width should be ~1.618× the nose width.
Recommendations are grouped by how invasive they are. Non-invasive options change how the feature reads to an observer; surgical options change the underlying structure and therefore the measurement itself.
If you scored Excellent
Your mouth-to-nose width ratio matches the golden ratio — excellent oral harmony.
Non-invasive
- Maintain lip hydration and health to preserve current proportions
If you scored Good
Your mouth-nose ratio is close to ideal. Subtle adjustments can perfect it.
Non-invasive
- Lip liner just outside the corners adds subtle perceived width
- Nose contouring can also shift this ratio by changing perceived nose width
If you scored Average
Your mouth-nose ratio is moderately off. Lip and nose adjustments both help.
Non-invasive
- Lip liner technique: slightly extend outside the natural lip corners
Minimally invasive
- Lip filler focused on the lateral lip body adds width without volume
If you scored Below average
Your mouth is too narrow or too wide relative to your nose — this ratio is notably off the golden proportion.
Non-invasive
- Lip liner with extension past natural corners for daily width correction
Minimally invasive
- Lateral lip filler: adds mouth width targeting the outer lip body
Surgical
- Corner lip lift: permanently widens the mouth opening by 2–4mm per side
Common questions about mouth-to-nose ratio
Why is the ideal below 1.0 when my mouth is clearly wider than my nose?
The nose measurement runs to the nasolabial fold rather than the alar base, inflating the denominator by roughly 5%. Both the measurement and the reference use that same landmark set, so the comparison is internally consistent.
Should my mouth be wider than my nose?
On a physical measurement, usually yes. On this landmark set the reference is 0.843, because the measured nose is wider than the anatomical one. Compare your score to the reference given here, not to a figure from elsewhere.