Face Shape Detector Calculator
Enter your forehead, cheekbone, and jawline widths plus your face length to estimate your face shape from their proportions.
Identify Your Face Shape by Key Measurements
Face Shape Detector Formula
Where:
- \(F\) — forehead width (cm).
- \(C\) — cheekbone width (cm).
- \(J\) — jawline width (cm).
- \(L\) — face length (cm).
- \(\bar W\) — average of the three widths (cm).
- \(R\) — face length divided by average width; \(Q\) — face length divided by cheekbone width.
There is no single equation that determines face shape. The calculator compares these ratios and the relative widths in a fixed order to assign a category.
Face Shape Detector – Calculation Example
Example: Use the default measurements: a forehead width of 14 cm, cheekbone width of 15 cm, jawline width of 14 cm, and face length of 18 cm.
\[ \bar W=\frac{14+15+14}{3}=\frac{43}{3}\approx14.33\text{ cm},\qquad R=\frac{18}{43/3}=\frac{54}{43}\approx1.256 \]
The widths are not all within 1 cm of one another: the cheekbones are exactly 1 cm wider than both the forehead and jawline. The face is not short enough for Round. It does not meet the Heart test because \(L/C=18/15=1.2\), and it does not meet the Diamond test because \(J=F\).
Result: Oval face shape.
How to use the calculator
- Enter Forehead width at the widest part of your forehead.
- Enter Cheekbone width across the top of your cheekbones, from one side of your face to the other.
- Enter Jawline width across your face from one jaw corner to the other.
- Enter Face length from your chin to your hairline.
- Read the category shown under Face Shape. All four measurements must be positive; use centimeters for consistency with the field labels.
For a more repeatable comparison, face a mirror, keep your head level, and measure the same landmarks each time. A flexible tape or a ruler and mirror can help. Record straight-line widths across the face rather than following the curves of your forehead or jaw.
What your face shape result means
Face shape is a shorthand for how the width of your forehead, cheekbones, and jaw compares with your face length. It can be a starting point when considering hairstyles, glasses, or facial hair, but it is not a measure of attractiveness or a precise description of every facial feature. Two people with the same result may have noticeably different chins, jaw angles, or hairlines.
The calculator first checks whether all three widths differ from one another by less than 1 cm. If they do, it uses face length divided by average width: a ratio below 1.05 gives Square; a ratio from 1.05 to below 1.4 gives Oval; and a ratio of 1.4 or more gives Oblong. These are measurement-based labels: the calculator does not assess whether a jaw looks angular.
If the widths do not pass that first test, the calculator checks other patterns in order. Round requires a length-to-average-width ratio below 1.05, with both forehead and jawline narrower than the cheekbones. Heart requires the cheekbones to be wider than both, plus a face-length-to-cheekbone-width ratio above 1.5. Diamond requires the cheekbones to be widest and the jawline to be narrower than the forehead. Measurements that meet none of these tests return Oval as the default.
Because the tests run in order, the label describes which rule matched first—not necessarily the only reasonable visual description. If you are interested in a different comparison of facial measurements, the Golden Ratio Face calculator examines facial proportions rather than assigning one of these shape categories.
Measurement tips and limitations
- Use the same unit for every entry. The fields are labeled in centimeters, and the 1 cm width threshold assumes centimeter measurements; entering inches without conversion can change the category.
- Measure each width straight across, not along the skin. In particular, Jawline width means the distance between jaw corners across the face, not the length of the jaw from ear to chin.
- Small differences can matter. Widths exactly 1 cm apart do not pass the calculator’s “less than 1 cm” test, and a ratio exactly on a cutoff may produce a different label from one just below it.
- The result depends only on four numbers. It cannot account for soft-tissue contours, chin shape, jaw angle, hairstyle, or the way a photograph’s perspective changes apparent proportions.
If a result seems surprising, recheck the measurement landmarks and try again before treating it as a fixed label. For comparisons beyond the face, the Proportionality of Body calculator addresses body measurements separately.
Frequently Asked Questions
How can I estimate my face shape by hand?
Start by comparing the three widths, then compare face length with their average. For example, if all three widths are 15 cm and face length is 22 cm, the widths pass the calculator’s similarity test and the length-to-width ratio is \(22/15\approx1.47\). That produces an Oblong result. For unequal widths, the order of the calculator’s tests matters, so a visual guess may not match its label.
Can I measure my face in inches instead of centimeters?
Yes, but convert each measurement to centimeters before entering it: multiply inches by 2.54. Ratios stay the same when all measurements use one unit, but this calculator also checks whether widths differ by less than 1 cm. Entering inch values directly would apply that cutoff incorrectly and could change the result.
Where should I measure face length if my hairline is receding or uneven?
Choose a consistent point near the center of your natural hairline, rather than a widow’s peak or a temporary hairstyle edge. If the original hairline is hard to identify, note the point you used and treat the result as approximate. Measuring from the chin to a different forehead point can change the length enough to affect the category.
Can I use a selfie to determine my face shape?
A selfie can offer a rough impression, but measurements taken from a close-up photo may be distorted by camera perspective or head angle. If you use a photo, face the camera directly, keep it level, and stand farther back rather than using a close-up selfie. You would still need a reliable scale to enter centimeter measurements into this calculator.
What if the left and right sides of my face are different?
Mild facial asymmetry is common. Measure each full width between the same left and right landmarks; there is no need to make one side match the other. If a landmark is unclear, repeat the measurement and use a consistent, reasonable estimate. A single shape label cannot describe asymmetry, so consider the result a broad guide rather than a complete description.
Is there a normal or best face shape?
No face shape is inherently more normal, healthy, or attractive than another. These labels group continuous measurements into broad categories, and different methods may give the same person different labels. If you are choosing glasses or a hairstyle, fit, comfort, and your own preferences are more useful than trying to achieve a particular category.
Why doesn’t the calculator show rectangular, pear, or triangle face shapes?
This calculator has a limited set of output labels, not a category for every term used in styling guides. A face described elsewhere as rectangular may receive an Oblong result, while a pear or triangle description may fall into the default Oval category. Those labels are not exact equivalents; different guides consider features that four measurements cannot capture.