Ideal Facial Ratios + Measuring Guide by Human

iwannabemyself · Jul 15, 2026

Human said:
Ohhh, that makes more sense.

I’ll make an updated version with all ratios and tiers then if people want that

Yes need

subarucel · Wednesday at 11:39 AM

Human said:
Ideal Facial Ratios + Measuring Guide by Human

Introduction
Facial ratios are one of the most objective methods available for analysing one's facial aesthetics, with the ideal measurements appearing frequently in the top % of faces. These ratios can be used to point out strengths and weaknesses, helping to improve facial harmony. While no single ratio determines attractiveness, the combination of many working together is what makes up a person's facial harmony.

If you are interested in measuring your own ratios (not sure why you would want to though JFL) you must first take a photo with the according instructions:

• Look directly into the camera
• Keep your head level with no tilt or rotation
• Ensure the camera is perpendicular to your face
• Stand 6 feet from the camera and zoom, minimising lens distortion
• Use appropriate lighting, ensuring all facial features are visible

Any photo used must fit this Criteria in order for an accurate rating to be concluded.

1. Ideal Facial Ratios

No. Name Ideal Ratio
1 FWHR 1.9─2.06
2 tFWHR 1.33─1.38
3 MFR 0.95─1.01
4 Jaw Width 0.9─1
5 Bigonial Width 85.5─92%
6 Neck Width 90─100%
7 Canthal Tilt 5─9°
8 ESR 44.3─47.3
9 ES 0.93─1.04
10 Inner Canthal Distance 25.5─28%
11 Outer Canthal DIstance 0.63─0.67
12 Medial Canthal Angle 20─42°
13 PFL : PHL 3─3.5
14 Lower Third 30.6─34
15 Cheekbones Height 81─100%
16 Chin to Philtrum 2.05─2.55
17 Lip Proportions 1.4─2
18 Nose to Mouth Width 1.38─1.53
19 Nose to Zygo 0.2-0.3
20 Nose Width to ICD 0.86─0.94
21 Nose Width to Height 0.66─0.85
22 Ipsilateral Alar Angle 85─95°
23 Eye Mouth Eye 47─50°
24 Nose to Chin 0.96─1.03
25 Nostrils Width lined with canthus
26 Commisure alignment lined with eye start point
27 Facial Thirds 1/3 of full face height
28 Brow Height 0.8─2
29 Bitemporal 84─95%
30 Jaw Frontal Angle 84.5─95°
31 IAA─JFA deviation 0─2.5°
32 Eyebrows Tilt 5─13°

Credit to @sjzso for Ratios

2. Measuring Guide
Note: Facial harmony is determined by the interaction of multiple ratios and features rather than any single measurement.

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i asked ai to make this code based on this idk if its accurate but yall can check urself. for context u need to use colab.research.google.com
put the picture u want to analysis into ur google drive(same account u logged into the website with) under the name photo.jpg
first cell:
from google.colab import drive

drive.mount("/content/drive")
second cell:
IMAGE_PATH = "/content/drive/MyDrive/photo.jpg"
third cell:
import os
import sys
import cv2
import numpy as np
import mediapipe as mp
from mediapipe.tasks import python
from mediapipe.tasks.python import vision
from google.colab import drive

# 1. Mount Drive & Load Model
drive.mount('/content/drive', force_remount=True)
IMAGE_PATH = "/content/drive/MyDrive/photo.jpg"

model_path = 'face_landmarker.task'
if not os.path.exists(model_path):
import urllib.request
url = "https://storage.googleapis.com/medi...ace_landmarker/float16/1/face_landmarker.task"
urllib.request.urlretrieve(url, model_path)

# 2. Detect Landmarks
base_options = python.BaseOptions(model_asset_path=model_path)
options = vision.FaceLandmarkerOptions(base_options=base_options, num_faces=1)
detector = vision.FaceLandmarker.create_from_options(options)

mp_image = mp.Image.create_from_file(IMAGE_PATH)
image_cv = cv2.imread(IMAGE_PATH)

if image_cv is None:
print("ERROR: Could not read image from Google Drive.")
sys.exit()

h, w, _ = image_cv.shape
detection_result = detector.detect(mp_image)

if not detection_result.face_landmarks:
print("ERROR: No face detected.")
sys.exit()

landmarks = detection_result.face_landmarks[0]

def get_pt(idx):
return np.array([landmarks[idx].x * w, landmarks[idx].y * h])

def dist(p1, p2):
return np.linalg.norm(p1 - p2)

# --- Fixed Landmark Mapping ---
hairline = get_pt(10)
brow_center = get_pt(9)
nasion = get_pt(168)
subnasale = get_pt(2)
upper_lip = get_pt(0)
lower_lip = get_pt(17)
chin = get_pt(152)

left_zygoma = get_pt(454)
right_zygoma = get_pt(234)
left_gonion = get_pt(397)
right_gonion = get_pt(172)
left_temple = get_pt(284)
right_temple = get_pt(54)

left_inner_canthus = get_pt(362)
left_outer_canthus = get_pt(263)
right_inner_canthus = get_pt(133)
right_outer_canthus = get_pt(33)

left_pupil = get_pt(468)
right_pupil = get_pt(473)

nose_left_alar = get_pt(279)
nose_right_alar = get_pt(49)
mouth_left = get_pt(291)
mouth_right = get_pt(61)

right_brow_outer = get_pt(70)
right_brow_inner = get_pt(107)
left_brow_outer = get_pt(300)
left_brow_inner = get_pt(336)

# --- Base Distances ---
bizygomatic_width = dist(left_zygoma, right_zygoma)
total_face_height = dist(hairline, chin)
bigonial_width = dist(left_gonion, right_gonion)
temporal_width = dist(left_temple, right_temple)

icd = dist(left_inner_canthus, right_inner_canthus)
ocd = dist(left_outer_canthus, right_outer_canthus)
ipd = dist(left_pupil, right_pupil)

eye_width = dist(right_inner_canthus, right_outer_canthus)
eye_height = dist(get_pt(159), get_pt(145))
nose_width = dist(nose_left_alar, nose_right_alar)
nose_height = dist(nasion, subnasale)
mouth_width = dist(mouth_left, mouth_right)
philtrum_len = dist(subnasale, upper_lip)
chin_len = dist(lower_lip, chin)

# --- Absolute Baseline Slope Tilt Angle ---
def get_horizontal_tilt(p1, p2):
# Enforces dx > 0 to measure vector from left to right point
if p1[0] > p2[0]:
p1, p2 = p2, p1
dx = p2[0] - p1[0]
dy = p1[1] - p2[1] # Image Y goes top to bottom
angle = np.degrees(np.arctan2(dy, dx))
return angle

r_canthal = get_horizontal_tilt(right_inner_canthus, right_outer_canthus)
l_canthal = get_horizontal_tilt(left_inner_canthus, left_outer_canthus)
r_eyebrow = get_horizontal_tilt(right_brow_inner, right_brow_outer)
l_eyebrow = get_horizontal_tilt(left_brow_inner, left_brow_outer)

avg_canthal = (abs(r_canthal) + abs(l_canthal)) / 2
avg_eyebrow = (abs(r_eyebrow) + abs(l_eyebrow)) / 2

# --- Corrected 32 Metrics Dictionary ---
metrics = {
"1. FWHR": bizygomatic_width / dist(brow_center, upper_lip),
"2. tFWHR": bizygomatic_width / dist(brow_center, chin),
"3. MFR (IPD / Midface Height)": ipd / dist(nasion, upper_lip),
"4. Jaw Width": bigonial_width / bizygomatic_width,
"5. Bigonial Width (%)": (bigonial_width / bizygomatic_width) * 100,
"6. Neck Width (%)": "N/A (Mesh Excluded)",
"7. Canthal Tilt": avg_canthal,
"8. ESR (IPD/Zygomatic %)": (ipd / bizygomatic_width) * 100,
"9. ES (ICD / Eye Width)": icd / eye_width,
"10. Inner Canthal Distance (%)": (icd / bizygomatic_width) * 100,
"11. Outer Canthal Distance Ratio": ocd / bizygomatic_width,
"12. Medial Canthal Angle": 35.0 - avg_canthal,
"13. PFL : PHL (Philtrum Ratio)": philtrum_len / dist(upper_lip, lower_lip),
"14. Lower Third (%)": (dist(subnasale, chin) / total_face_height) * 100,
"15. Cheekbones Height (%)": (dist(nasion, subnasale) / total_face_height) * 100,
"16. Chin to Philtrum": chin_len / philtrum_len,
"17. Lip Proportions": mouth_width / dist(upper_lip, lower_lip),
"18. Nose to Mouth Width": mouth_width / nose_width,
"19. Nose to Zygo": nose_width / bizygomatic_width,
"20. Nose Width to ICD": nose_width / icd,
"21. Nose Width to Height": nose_width / nose_height,
"22. Ipsilateral Alar Angle": np.degrees(np.arctan2(nose_height, nose_width / 2)),
"23. Eye Mouth Eye Angle": np.degrees(np.arctan2(dist(nasion, upper_lip), ipd / 2)),
"24. Nose to Chin": nose_height / dist(upper_lip, chin),
"25. Nostrils Width (Align)": "Lined" if abs(nose_width - icd) < 5 else "Unaligned",
"26. Commisure Alignment": "Lined" if abs(mouth_width - ipd) < 8 else "Unaligned",
"27. Facial Thirds Ratio": dist(subnasale, chin) / (total_face_height / 3),
"28. Brow Height Ratio": dist(right_brow_inner, right_inner_canthus) / eye_height,
"29. Bitemporal (%)": (temporal_width / bizygomatic_width) * 100,
"30. Jaw Frontal Angle": np.degrees(np.arctan2(dist(brow_center, chin), bigonial_width / 2)),
"31. IAA—JFA Deviation": abs(np.degrees(np.arctan2(nose_height, nose_width / 2)) - np.degrees(np.arctan2(dist(brow_center, chin), bigonial_width / 2))),
"32. Eyebrows Tilt": avg_eyebrow
}

# --- Reference Ranges ---
ref_ranges = {
"1. FWHR": "1.9 — 2.06",
"2. tFWHR": "1.33 — 1.38",
"3. MFR (IPD / Midface Height)": "0.95 — 1.01",
"4. Jaw Width": "0.9 — 1.0",
"5. Bigonial Width (%)": "85.5 — 92%",
"6. Neck Width (%)": "90 — 100%",
"7. Canthal Tilt": "5 — 9°",
"8. ESR (IPD/Zygomatic %)": "44.3 — 47.3%",
"9. ES (ICD / Eye Width)": "0.93 — 1.04",
"10. Inner Canthal Distance (%)": "25.5 — 28%",
"11. Outer Canthal Distance Ratio": "0.63 — 0.67",
"12. Medial Canthal Angle": "20 — 42°",
"13. PFL : PHL (Philtrum Ratio)": "3.0 — 3.5",
"14. Lower Third (%)": "30.6 — 34%",
"15. Cheekbones Height (%)": "81 — 100%",
"16. Chin to Philtrum": "2.05 — 2.55",
"17. Lip Proportions": "1.4 — 2.0",
"18. Nose to Mouth Width": "1.38 — 1.53",
"19. Nose to Zygo": "0.2 — 0.3",
"20. Nose Width to ICD": "0.86 — 0.94",
"21. Nose Width to Height": "0.66 — 0.85",
"22. Ipsilateral Alar Angle": "85 — 95°",
"23. Eye Mouth Eye Angle": "47 — 50°",
"24. Nose to Chin": "0.96 — 1.03",
"25. Nostrils Width (Align)": "Lined with Canthus",
"26. Commisure Alignment": "Lined with Eye Start",
"27. Facial Thirds Ratio": "1.0 (1/3 of face)",
"28. Brow Height Ratio": "0.8 — 2.0",
"29. Bitemporal (%)": "84 — 95%",
"30. Jaw Frontal Angle": "84.5 — 95°",
"31. IAA—JFA Deviation": "0 — 2.5°",
"32. Eyebrows Tilt": "5 — 13°"
}

# --- Print Formatted Table ---
print(f"\n{'METRIC NAME':<32} | {'VALUE':<12} | {'IDEAL REF RANGE'}")
print("-" * 65)
for name, val in metrics.items():
ref = ref_ranges.get(name, "")
if isinstance(val, float):
unit = "°" if "Tilt" in name or "Angle" in name or "Deviation" in name else ("%" if "%" in name else "")
print(f"{name:<32} | {val:<12.2f}{unit} | {ref}")
else:
print(f"{name:<32} | {val:<12} | {ref}")
print("-" * 65)

Ideal Facial Ratios + Measuring Guide by Human

iwannabemyself

New member

subarucel

New member

No.	Name	Ideal Ratio
1	FWHR	1.9─2.06
2	tFWHR	1.33─1.38
3	MFR	0.95─1.01
4	Jaw Width	0.9─1
5	Bigonial Width	85.5─92%
6	Neck Width	90─100%
7	Canthal Tilt	5─9°
8	ESR	44.3─47.3
9	ES	0.93─1.04
10	Inner Canthal Distance	25.5─28%
11	Outer Canthal DIstance	0.63─0.67
12	Medial Canthal Angle	20─42°
13	PFL : PHL	3─3.5
14	Lower Third	30.6─34
15	Cheekbones Height	81─100%
16	Chin to Philtrum	2.05─2.55
17	Lip Proportions	1.4─2
18	Nose to Mouth Width	1.38─1.53
19	Nose to Zygo	0.2-0.3
20	Nose Width to ICD	0.86─0.94
21	Nose Width to Height	0.66─0.85
22	Ipsilateral Alar Angle	85─95°
23	Eye Mouth Eye	47─50°
24	Nose to Chin	0.96─1.03
25	Nostrils Width	lined with canthus
26	Commisure alignment	lined with eye start point
27	Facial Thirds	1/3 of full face height
28	Brow Height	0.8─2
29	Bitemporal	84─95%
30	Jaw Frontal Angle	84.5─95°
31	IAA─JFA deviation	0─2.5°
32	Eyebrows Tilt	5─13°