To calculate the cephalic index, divide the width of the head by its length, then multiply the result by 100. This gives you the cephalic index as a percentage.

The Cephalic Index Calculator is a tool used to determine the cephalic index, which is a measure of the skull’s shape. This index helps classify human skulls into different categories based on their width and length proportions. Understanding the cephalic index is important in anthropology, forensic science, and medical research to study variations in human populations and identify characteristics associated with different ethnic groups.

### Formula:

`$CI = \left(\frac{\text{Width of Head}}{\text{Length of Head}}\right) \times 100$`

Variable | Meaning |
---|---|

CI |
Cephalic Index (head shape ratio) |

Width of Head |
The width of the head at its widest point (BPD) |

Length of Head |
The length of the head from front to back (OFD) |

**Solved Calculations :**

**Example 1:**

**Given Values**:

**Width of Head (BPD)**= 9 cm**Length of Head (OFD)**= 12 cm

Calculation | Instructions |
---|---|

CI = (9 / 12) × 100 | Divide the width of the head by the length, then multiply by 100. |

CI = 0.75 × 100 | Perform the multiplication. |

CI = 75 | The result gives the cephalic index in percentage. |

**Answer**: CI = 75 (Normal Cephalic Index)

**Example 2:**

**Given Values**:

**Width of Head (BPD)**= 10 cm**Length of Head (OFD)**= 13 cm

Calculation | Instructions |
---|---|

CI = (10 / 13) × 100 | Divide the width of the head by the length, then multiply by 100. |

CI = 0.769 × 100 | Perform the multiplication. |

CI = 76.9 | The result gives the cephalic index in percentage. |

**Answer**: CI = 76.9 (Normal Cephalic Index)

**What is Cephalic Index Calculator ?**

The **cephalic index** is a numerical value used to classify human head shapes by comparing the width and length of the head.

A higher value indicates a broader head, while a lower value suggests a longer head. Anthropologists and medical professionals often use the **Cephalic Index Calculator** to determine whether an individual has a dolichocephalic (long-headed), mesocephalic (average), or brachycephalic (broad-headed) shape. The calculator simplifies this measurement, offering quick and accurate results.

In various fields, such as forensic science and anthropology, the **cephalic index** provides important insights into population studies and individual health assessments. It helps track cranial developments or abnormalities in newborns and assists in understanding human evolutionary patterns.

This calculator helps professionals can easily compare head shapes across different groups, aiding in medical diagnoses or anthropological research.