Face Shape Calculator
Calculate your face shape online in seconds. Prefer not to upload a photo? Enter four simple tape-measure readings and get an instant face shape result — powered by the same ratio logic as our AI detector.
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Would rather answer questions instead? Try the face shape quiz — or for the most precise result, use the AI photo detector.
How the Calculator Works
The calculator compares the ratios between your four measurements — length-to-width, forehead-to-jaw, cheekbone-to-forehead, and cheekbone-to-jaw — against a set of thresholds to classify your face into one of seven shapes: oval, round, square, heart, diamond, oblong, or triangle. It runs the same ratio logic used by the AI photo detector on this site, applied to the numbers you enter instead of numbers derived from a photo.
Different Ways to Calculate Your Face Shape
Whether you want to calculate your face shape online with a tape measure, answer a few quick questions, or calculate face shape from a photo automatically, the same seven-category result is available however you choose to get there.
You Are Here
Manual Calculator
Calculate face shape from four tape-measure readings. No photo, no app, no sign-up.
No Measuring
Face Shape Quiz
Answer 7 visual questions instead of measuring anything by hand.
Most Precise
AI Photo Detector
Calculate your face shape from a photo — hundreds of landmarks, mapped automatically.
Face Shape Ratio Reference
The exact ratio ranges the calculator uses to calculate face shape from your four measurements.
| Shape | Defining Ratio | Trait |
|---|---|---|
| Oblong | Length ÷ Width > 1.55 | Notably longer than wide |
| Diamond | Cheek ÷ Forehead & Cheek ÷ Jaw > 1.25 | Cheekbones widest, forehead and jaw both narrow |
| Heart | Forehead ÷ Jaw > 1.2 | Broad forehead tapering to a narrow chin |
| Triangle | Jaw ÷ Forehead > 1.2 | Jaw wider than the forehead |
| Square | Length ÷ Width < 1.15, widths within ~10% | Forehead, cheeks, and jaw close to equal width |
| Round | Length ÷ Width < 1.2 | Width and length close to equal, soft contours |
| Oval | Falls outside all other thresholds | Balanced proportions, gently tapered jaw |
Frequently Asked Questions
How does the face shape calculator work?
Enter four measurements — forehead width, cheekbone width, jaw width, and face length — in centimeters or inches. The calculator compares the ratios between these measurements (such as length-to-width and forehead-to-jaw) against a set of thresholds to determine which of the seven face shapes best matches your proportions.
What do I need to measure my face?
A flexible tape measure or a piece of string and a ruler. Pull your hair back so your forehead and jawline are fully visible, then measure straight across for width and straight down the center for length.
Is the manual calculator as accurate as the AI photo detector?
The AI photo detector maps hundreds of precise facial landmarks and is generally more accurate, since it removes tape-measure positioning error. The manual calculator uses the same underlying ratio logic and is a solid alternative if you would rather not upload a photo.
Which four measurements does the calculator need?
Forehead width (temple to temple), cheekbone width (the widest point across both cheekbones), jaw width (the widest point of the jaw below the ears), and face length (hairline to chin tip).
Do I need to use centimeters or inches?
Either — use the cm/in toggle above the measurement fields. As long as all four measurements are entered consistently, the calculator converts and computes ratios correctly either way.
Is this face shape calculator online and free to use?
Yes. This face shape calculator runs entirely online in your browser — there is nothing to download, no account, and no sign-in. Enter your four measurements and calculate your face shape instantly, completely free.
Is there an official Google face shape calculator?
Google itself does not publish a face shape calculator — searches for a "Google face shape calculator" typically lead to independent tools like this one. This calculator is free, ratio-based, and works the same whether you arrived from a search engine or a direct link.
Does a face shape calculator work differently for a woman vs a man?
No. The four measurements and ratio thresholds are purely geometric and apply identically regardless of gender. A face shape calculator for women uses the exact same math as one used by men — there is no separate formula.
Can I calculate my face shape without an app or a photo?
Yes — that is exactly what this tool does. Skip the app store and skip uploading a photo: measure your forehead, cheekbone, jaw, and face length with a tape measure, and calculate your face shape directly in the browser.
What if I want to calculate my face shape from a photo instead?
Use the free AI photo detector on the homepage — it maps facial landmarks automatically from an uploaded photo, so there is no manual measuring involved.