Lip Shape Analyzer
Measure your lip fullness, width, upper/lower balance, and Cupid's bow width from a photo, your camera, or your own numbers.
- Analyzed in your browser
- Free, no sign-up
How do I find my lip shape online?
A lip shape analyzer describes the visible proportions of your lips: fullness, width, upper-to-lower balance and Cupid's bow width. This free tool detects lip landmarks in a front-facing photo you upload or capture with your camera, or uses measurements you type in, then labels your lips with descriptive traits such as full, thin, wide, top-heavy or balanced.
Results are relative ratios, not millimeters, and the traits are this tool's own descriptive groupings, not clinical diagnoses. No photo handy? Use Manual Measurements.
Upload a photo
Use a front-facing photo with even lighting, a relaxed expression, and your lips clearly visible.
JPG, PNG, or WEBP, up to 15MB
Manual measurements
Enter measurements in any consistent unit (mm, cm, or pixels). Only the ratios matter, so use the same unit for every box.
Example (in millimeters)
With a ruler on a mirror or a printed photo, you might measure:
- Lip width: 50
- Upper lip height: 8
- Lower lip height: 12
- Cupid's bow width: 10 (optional)
- Face width: 110 (optional)
These numbers are only a demonstration, not an average or a target.
Your lip shape profile
Measurements
Informational analysis of visible lip proportions. Results vary with lighting, expression, camera angle, and image quality. Values are relative ratios, not millimeters. This is not a medical or diagnostic tool and does not rate attractiveness.
How the Lip Shape Analyzer Works
The analyzer looks at a photo or camera frame you provide and locates facial landmarks around the mouth using an on-device machine learning model that runs in your browser. From those landmarks it calculates proportional measurements, such as lip width against lip height or upper lip against lower lip, and matches them against a set of descriptive lip-shape traits. You can also skip the photo and enter measurements by hand.
What the Lip Shape Analyzer Measures
- Lip width: corner-to-corner distance at the oral commissures.
- Upper and lower lip height: thickness of each lip, and combined as total lip height.
- Upper/lower ratio: how the two lips compare in proportion[3].
- Cupid's bow width: distance between the two upper-lip peaks[1][2].
- Lip fullness index: total lip height relative to lip width.
- Mouth-to-face-width ratio: lip width relative to face width, when reliably detectable.
Because no physical reference object is in the photo, these are relative, normalized proportions, not millimeters. Landmark names follow standard clinical terminology[1][4]. This analyzer does not measure lip symmetry, corner orientation (upturned or downturned) or Cupid's bow depth. For facial symmetry, try the Face Symmetry Test.
How to Read Your Results
Each result is a ratio, so it does not depend on photo size or the unit you type in. The labels below are this tool's own descriptive groupings. They are not published clinical standards, and no label is better or worse than another.
| Result | What it compares | How this tool groups it |
|---|---|---|
| Fullness index | Total lip height divided by lip width | Full at 0.32 or higher; thin at 0.20 or lower; otherwise neither label |
| Upper / lower balance | Upper lip height divided by lower lip height | Top-heavy at 1.12 or higher; bottom-heavy at 0.78 or lower; balanced in between |
| Mouth width vs. face | Lip width as a share of face width | Wide at 46% or more. Needs a face width, which photo mode measures and manual mode only has if you enter it |
| Cupid's bow width | Distance between the two upper-lip peaks as a share of lip width | Shown as a percentage. Heart-shaped is flagged at 22% or more together with a bottom-heavy ratio |
Round is assigned to full lips that are not wide for the face. If you use Manual Measurements without a face width, wide cannot be assessed, so full lips may be labeled round.
In photo mode the tool measures at the center of the mouth: upper lip height from the top-center of the upper lip to the lip line, and lower lip height from the lip line to the bottom-center of the lower lip. Use the same points when you type in your own numbers.
Lip Shape Characteristics
Lips are better described by several separate characteristics than by one category. Fullness, upper/lower balance, width and contour are independent, so one set of lips can carry a trait from each group. The analyzer reports the traits that apply.
Fullness
Full Lips
Greater overall height relative to width, giving a fuller appearance.
Thin Lips
Lower overall height relative to width.
Upper/lower balance
Top-Heavy Lips
Upper lip is proportionally fuller than the lower lip.
Balanced Lips
Upper and lower lip proportions are close to even.
Bottom-Heavy Lips
Lower lip is proportionally fuller than the upper lip.
Width
Wide Lips
Mouth width is proportionally large relative to the face.
Narrow mouths are the other end of this range. The analyzer does not give them a separate label.
Contour
Round Lips
Fuller lips whose width is not large relative to the face.
Heart-Shaped Lips
A relatively wide Cupid's bow paired with a fuller lower lip.
Round and heart-shaped are inferred from the proportions above. The analyzer does not trace the outline of the lips.
Lip Anatomy Basics
These are the visible features used to describe lips on this page.
- Vermilion border
- The edge where the pink or red part of the lip meets the surrounding facial skin.
- Cupid's bow
- The double curve along the top edge of the upper lip, with a dip in the center between two peaks.
- Philtrum
- The vertical groove between the nose and the upper lip.
- Lip corners
- The points on each side where the upper and lower lips meet, also called the oral commissures.
- Lip line
- The line where the closed upper and lower lips meet.
How to Take a Photo for Reliable Results
Photo-based analysis is an estimate, and the photo has a large effect on it. These steps help:
- Face the camera. Keep your head level and look straight ahead; a turned or tilted head changes the proportions.
- Relax your mouth. Keep the lips gently closed. Smiling changes lip width and height, and an open mouth distorts the lip line.
- Use even light. Avoid shadows across the mouth and strong light from one side.
- Keep the mouth clear. Lipstick, liner, gloss and filler can shift where the lip edge appears, and a mask or hand blocks detection.
- Use a sharp image with one face. The tool needs at least 160×160 pixels and works best on a larger, clear photo.
Checking without a photo
In a mirror with relaxed lips, notice whether the lips look tall or short for their width (fullness), whether the upper or lower lip looks fuller (balance), how wide the mouth looks against your face, and the shape of the top edge of the upper lip (Cupid's bow). Categories overlap, and one photo or glance cannot capture every feature. For more control, measure with a ruler and use Manual Measurements.
Accuracy and Limitations
This tool provides an informational analysis of visible lip proportions. Results vary with lighting, facial expression, camera angle, image quality, and landmark-detection accuracy. It is not a medical or diagnostic tool and does not generate attractiveness ratings or claims about personality or health. For best results use a front-facing photo, a relaxed expression, even lighting, and nothing covering the mouth.
Anatomy terms and landmark names on this page come from the sources listed below. The cutoffs this analyzer uses to label traits are its own descriptive groupings, not published clinical standards. Individual variation is normal, and no single ratio defines a "correct" lip shape.
Privacy
Your photo is analyzed in your browser: it is drawn to a local canvas and processed on your device by a face-landmark model. This tool's own code does not upload or store your image. Camera access starts only after you click Start camera, and only the single frame you capture is analyzed; no video is recorded. Closing or refreshing the page clears the image.
To run, the page loads the analysis code from cdn.jsdelivr.net, the model file from storage.googleapis.com and fonts from Google Fonts. Those requests can expose standard details such as your IP address and browser to those hosts, but they do not include your photo. See the site's privacy policy for site-wide practices.
Sources & Citations
Anatomy terms and landmark names on this page are informed by these sources. They were not used to set the analyzer's cutoffs:
- 1Soft Tissue Cephalometric Analysis of the Lips in Orthodontic Diagnosis and Treatment Planning: A Narrative ReviewPMC (National Library of Medicine), peer-reviewed narrative review
Reviews clinical methods for assessing lip position and proportion, including philtrum and Cupid's bow dimensions.
- 2Anatomical-Based Diagnosis and Filler Injection Techniques: Lips and PhiltrumPMC (National Library of Medicine), peer-reviewed clinical review
Describes typical upper/lower lip proportion ranges, philtrum length, and Cupid's bow angle.
- 3Anatomy, Head and Neck: LipsStatPearls / NCBI Bookshelf, peer-reviewed reference
Standard anatomical reference for lip structure, the vermilion zone, and the oral commissure.
- 4Lip AnatomyCleveland Clinic, patient-education reference
Plain-language overview of lip structure and function.
- 5Lip Anatomy: Surface Guide for Aesthetics PractitionersHarley Academy, clinical education resource
Surface-anatomy guide to the Cupid's bow, philtral columns, and vermilion border.
- 6Lip AugmentationThe PMFA Journal, aesthetic-medicine trade publication
Discusses commonly cited upper/lower lip proportion targets, presented as one clinical perspective, not a universal standard.
These sources describe population averages and clinical conventions, not fixed biological rules. The analyzer uses them for terminology and context only; its output is an informational estimate, not a clinical measurement.
Related Face Shape Guides
Lips are one piece of the picture. Pair this result with a face-shape guide for fuller styling context.
Oval Face Shape Guide
Learn how to identify an oval face shape.
Read the guide →Oblong Face Shape Guide
How to tell an oblong face from an oval one, plus styling that balances the proportions.
Read the guide →Rectangle Face Shape Guide
The measurement rule that separates a rectangle face shape from oblong and oval.
Read the guide →More Free Analyzer Tools
The Lip Shape Analyzer is part of a small family of free, in-browser tools on OvalFaceShape.com.
Face Shape Detector
The site's flagship analyzer: upload, use your camera, or enter measurements to find your face shape.
Open the tool →Golden Ratio Face Detector
Runs browser-based golden ratio analysis from detected landmarks and compares selected ratios with φ ≈ 1.618.
Open the tool →Face Symmetry Test
Analyze facial symmetry from browser-based landmarks to compare balance and alignment of your features.
Open the tool →Frequently Asked Questions
What is a lip shape analyzer?
A lip shape analyzer describes the visible proportions of your lips, such as fullness, width, upper-to-lower balance and Cupid's bow width. This one measures those proportions from a photo, a camera frame or numbers you enter, then labels your lips with descriptive traits. It is informational, not a medical or diagnostic tool.
How can I check my lip shape from a photo?
Upload a clear, front-facing photo or capture one with your camera, keep a relaxed expression and even lighting, then select Analyze. The tool finds your lip landmarks, calculates proportions and shows the matching traits. A single photo is an estimate, so try more than one if the result looks off.
How reliable is photo-based lip analysis?
It is an estimate. Lighting, expression, camera angle, makeup, image quality and landmark detection all affect the reading, and this tool has no published accuracy figure. Treat results as a rough description of proportions, compare more than one photo, or use Manual Measurements with your own numbers.
Do I need to create an account?
No. The analyzer works immediately, with no sign-up or registration required.
Is my photo sent to a server?
No. The tool's own code analyzes the image on your device and does not upload it. To run, the page loads analysis code and a model file from third-party hosts (jsDelivr and Google), which receive standard request data such as your IP address, but not your photo.
Why couldn't my lips be detected?
This usually happens with poor lighting, an extreme head angle, a very small or blurry image, or more than one face in frame. Try a clear, front-facing photo with your mouth unobstructed.
Are the measurements in millimeters?
No. Without a physical reference object in the photo, measurements are reported as relative proportions rather than absolute units like millimeters.
Does this tool rate attractiveness?
No. The analyzer only describes measurable proportions. It does not produce beauty scores, attractiveness ratings, or health or personality conclusions.
What does a top-heavy lip shape mean?
Top-heavy describes lips where the upper lip is proportionally fuller than the lower lip. In this analyzer it means the upper-to-lower height ratio is 1.12 or higher. It is only a descriptive label for proportion, not a flaw or a standard.
How do I identify my Cupid's bow?
Your Cupid's bow is the double curve along the top edge of the upper lip, with two peaks and a dip between them. Look at your lips in a mirror with a relaxed mouth. This analyzer reports its width, the distance between the two peaks as a share of lip width; it does not measure how deep the dip is.
Created by
Muhammad Rehan Iqbal (Rehan Mir)
Founder & Developer, OvalFaceShape.com
Muhammad Rehan Iqbal, professionally known as Rehan Mir, is the founder and developer of OvalFaceShape.com. He researches face shapes, facial proportions, hairstyles, glasses, grooming, and face-analysis tools to create clear, practical, and trustworthy guidance.