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Reviewed July 5, 2026
What is nasal root width?
Nasal root width is how broad the very top of the nose is, the part between the eyes where the bridge meets the brow. It is measured across the radix, just below the nasion. When this part of the nose looks heavy, people describe it as a wide nose bridge. It sets the starting point for the whole dorsum, so a broad root reads on the face long before the eye reaches the tip.
How It's Measured
How is nasal root width measured?
Nasal root width is the horizontal distance across the radix, the top of the nose at the level of the nasion, where the frontal bone meets the paired nasal bones (Naini, 2011). It is read on a straight front-on photo, taken at the narrowest point of the bridge between the inner eye corners.
- Radix and nasion: the root sits at the radix, just below the nasion, the deepest point of the nasofrontal junction between the brows.
- Inner-canthal frame: the root falls between the inner eye corners, so a wide root and close-set eyes can look similar from the front.
- Root versus base: this is the top of the nose, not the nostrils, so a narrow root can still sit above a wide alar base and the two are judged separately.
Read against the bridge below it, the root tells you whether the nose starts clean and narrow or already looks broad before it has begun (Daniel, 2004).
The same face with a noticeably broader nasal root on the right. The bridge looks visibly wider, yet the landmark span only shifts from 4.8 mm to 4.6 mm, because much of a wide bridge comes from the breadth of the underlying nasal bones and skin that the root-point distance does not fully capture. Same identity, same lighting, same framing.
Why It Matters
Why does nasal root width matter?
The root is where the eye starts reading the nose, so its width frames everything below it. A narrow root and a slight concavity at the bridge are what most people read as a refined nose (Daniel, 2004). When the radix is broad, the nose looks heavy at the top and the eyes can feel pushed apart, which is why a wide nose bridge changes the whole face and not just the nose.
A wide root is mostly about the underlying bone. The width here is set by the nasal bones and the frontal process of the maxilla, so it is structural rather than something a thick skin envelope alone explains (Springer et al., 2008). That is also why the root reads as more masculine when it is broad: nose shape is one of the most sexually dimorphic parts of the face, and men carry a wider, higher bridge on average.
There is no single correct width. The root runs narrowest in leptorrhine (European) noses and broader through the mesorrhine and platyrrhine (East Asian and African) patterns, where a lower, wider bridge is the normal form rather than a flaw (Ethnic Rhinoplasty, 2010). Good analysis reads the root against the rest of the nose and the person's own background. The cards and table below give working ranges to sit your own next to.
16–20 mm
Men
14–18 mm
Women
15–19 mm
Typical Range
Fig 2. Approximate nasal root width. The root is judged proportionally against the rest of the nose and varies with individual structure and background.
Demographic Variants
Nasal Root Width by Demographic
Nasal root width varies by population and sex, so the ideal is relative, not absolute. The pattern follows the classic leptorrhine, mesorrhine and platyrrhine nasal types, and each row links to its source.
Population | Root width tendency | Source |
|---|---|---|
European (leptorrhine) | Narrowest, highest bridge at the root | |
East Asian (mesorrhine) | Lower, broader bridge through the root | |
African (platyrrhine) | Widest bridge with a low, deep root | |
Indian (mixed type) | Moderate to broad root by region | |
West African (Ibibio) | Broad root, low nasofrontal junction |
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Your Questions
Frequently Asked Questions
A wide nose bridge is a broad nasal root, the top of the nose between the eyes. It usually comes from the breadth of the underlying nasal bones rather than from soft tissue, which is why it reads as structural and tends to make the eyes look further apart (Springer et al., 2008).
Root width is set by the nasal bones and the frontal process of the maxilla at the radix. A broad, low bony vault gives a wide nasal root and a flatter bridge, a pattern that is far more common in mesorrhine and platyrrhine noses than in European ones (Ethnic Rhinoplasty, 2010).
Surveys of the radix tend to favour a narrower, slightly concave bridge with a defined nasofrontal junction, but this is a phenotype-conditional preference, not a universal rule (Daniel, 2004). A wider nasal root is the normal form for many noses and should be read against the rest of the face rather than judged on its own.
Because the width comes from bone, a wide nasal root cannot truly be narrowed without surgery. Surgically it is reduced with lateral osteotomies that bring the nasal bones inward; non-surgical options can only add height to disguise the breadth, not reduce it (Naini, 2011).