Free · runs on your device
Nose width compared with the mouth
This divides the width across the nostrils by the width of the mouth, so the nose has a scale inside the same face.
It is a front-view proportion. It does not see the bridge from the side, and the photo never leaves the browser.
- Cost
- Free
- Time
- Under a minute
- Signup
- None
- Data
- Stays on device
Your photo
Add a photo to measure
Face the camera straight on, hair off the face, even light, no filter.
- 1Add your photoCamera or a file. Either stays on this device.
- 2Mapped in your browser478 landmarks find the zones. The picture is not uploaded.
- 3Your measured resultNumbers from this photo, drawn on the picture.
Add a photo. It stays in this browser.
- On-device, never uploaded
- 478 landmarks
- Free, no signup
In the app
Want a record of nose width, not a one-off?
Nose width on this page is a single reading. The app saves a scan and the routine that followed it, so the next photo has a baseline.
- Six saved scores: hydration, texture, tone, acne, pores, and redness
- A morning and evening routine built from the scan
- The same face, week after week, so a change shows up as a trend
Scan with your phone. iPhone opens the App Store. Android opens Google Play.
The science
What nose width measures, and how this page does it
- 01
One question, answered from this photo
Nose width uses the face in the frame, not a questionnaire. Nostril width compared with the width of a relaxed mouth.
- 02
Landmarks first, then the number
The photo is drawn to a canvas in your browser. A face landmark model marks 478 points so the measurement uses the face, not the background. Nothing is uploaded.
The two alar landmarks are divided by the mouth-corner landmarks. A smile stretches the mouth and lowers the ratio even though the nose did not change.
- 03
The result on this page, and the record in the app
Nostril width compared with the width of a relaxed mouth.
The AISkincare app keeps a scan: hydration, texture, tone, acne, pores, and redness, then builds a morning and evening routine from those scores. This page answers once and does not store the photo.
- 04
What will throw the number off
This is a cosmetic reading of one photo on your device. Lighting, lens, and angle change the numbers. It is not a diagnosis or a clinical measurement.
It cannot see the bridge from the side, cartilage, or breathing. Keep the mouth closed if you want a repeatable number.
How to read a nose width result
The two alar landmarks are divided by the mouth-corner landmarks. A smile stretches the mouth and lowers the ratio even though the nose did not change.
Use the steps under the tool as the procedure: same light, same distance, same expression, whenever you want a second reading to mean something. The app is where a series of scans can sit next to a routine. This page is the single measurement.
A setup that makes a second photo comparable
Daylight from a window, phone at eye level, an arm's length away, hair off the zones the tool needs, no beauty filter. Tilt in the chin or a camera held low changes several face measurements at once.
If the page warns that the photo looks angled, or that a distance falls outside a usual range, retake before you act on the figure.
One photo is a point. A month is a line.
Nose width on a Tuesday includes the light in the room. The same check in the same window next month is the comparison that can show a change. Stacking random selfies from different rooms mostly shows the rooms.
Scan the QR code under the tool with the phone you will keep using. An iPhone is sent to the App Store and an Android phone to Google Play, so the history starts in the right store.
What nose width will not claim
It cannot see the bridge from the side, cartilage, or breathing. Keep the mouth closed if you want a repeatable number.
This is a cosmetic reading of one photo on your device. Lighting, lens, and angle change the numbers. It is not a diagnosis or a clinical measurement.
How to use the result
- Use a photo taken by the rear camera, or by someone else, at arm's length.
- Face the light. Do not use a portrait filter.
- Keep hair off the forehead if you want the outline and thirds to settle.
Where to go from here
If one part of the result stood out, open the tool that asks only that question. Each one states its limit in the same place, and each one links back to a guide when a longer explanation helps.
- Brow heightMeasure the gap from the brow line to the upper lids, compared with how open the eyes are. A relaxed forehead gives the useful number.
- Face shape guideMatch your outline to oval, round, square, heart, oblong, or diamond using a mirror, then see what that changes for hair and frames.
- Symmetry self-checkNotice brow, eye, and mouth differences in a mirror. Almost every face is asymmetric. This page does not score attractiveness.
- Facial thirds guideSee whether your upper, middle, or lower third is the one that stands out. This is a proportion lesson, not a golden-ratio score.
This is a cosmetic reading of one photo on your device. Lighting, lens, and angle change the numbers. It is not a diagnosis or a clinical measurement.