This **ulna length to height calculator** is used in **medical anthropometry** and **forensic science** to estimate an individual’s **stature** based on their **ulna bone measurements**.

The **ulna**, one of the two main bones in the forearm, has proven to be a **reliable predictor** of overall height due to its **proportional relationship** with total body height.

24 cm Ulna Length to Height: ForMale: 156.62 cm (5’2″) and forFemale: 156.72 cm (5’2″)25 cm Ulna Length to Height:Male: 161.225 cm (5’3″) and forFemale: 161.175 cm (5’3″)

## Ulna Length To Height Calculator

Ulna Length (cm) | Male Height (cm) | Female Height (cm) |
---|---|---|

23 | 152.015 | 152.257 |

24 | 156.620 | 156.716 |

25 | 161.225 | 161.175 |

26 | 165.830 | 165.634 |

27 | 170.435 | 170.093 |

28 | 175.040 | 174.012 |

29 | 179.645 | 178.930 |

30 | 184.250 | 183.848 |

31 | 188.855 | 188.766 |

32 | 193.460 | 193.684 |

33 | 198.065 | 198.602 |

34 | 202.670 | 203.520 |

35 | 207.275 | 208.438 |

36 | 211.880 | 213.356 |

## Ulna Length to Height Chart

Gender | Age Group | Ulna Length (cm) | Estimated Height Range (cm) |
---|---|---|---|

Male | 18-30 | 25-27 | 165-175 |

Male | 31-50 | 26-28 | 170-180 |

Male | 51-70 | 27-29 | 175-185 |

Male | 71+ | 26-28 | 170-180 |

Female | 18-30 | 23-25 | 155-165 |

Female | 31-50 | 24-26 | 160-170 |

Female | 51-70 | 25-27 | 165-175 |

Female | 71+ | 24-26 | 160-170 |

Male | All Ages | 30 | 185-195 |

Female | All Ages | 29 | 180-190 |

## Ulna Length To Height Formula

**The most used equations are:**

**For Males: Height (cm) = 4.605 × Ulna length (cm) + 46.1**

**For Females: Height (cm) = 4.459 × Ulna length (cm) + 49.7**

**For a male with an ulna length of 27 cm: **

**Height = (4.605 × 27) + 46.1
Height = 124.335 + 46.1
Height = 170.435 cm**

## How to Determine Height from Ulna Length?

To accurately measure ulna length and determine height:

**Locate Measurement Points**:- Find the
**olecranon process**(elbow tip) - Identify the
**styloid process**(wrist bump)

- Find the
**Measurement Technique**:- Flex the elbow to
**90 degrees** - Use measuring tape or calipers
- Measure from point to point precisely

- Flex the elbow to

**A forensic anthropologist measures an unknown skeleton’s ulna at 26.3 cm. **

Using the male formula:

**Height = (4.605 × 26.3) + 46.1 = 167.21 cm**

## What is the length of the radius and ulna?

The **radius** and **ulna** typically maintain specific proportions:

Ulna: Usually 25-27 cm in adult malesRadius: Approximately 23-25 cm in adult malesRatio: Ulna is typically 1.1 times longer than radius

**In an adult male with:**

Ulna length: 26.5 cm

Radius length: 24.1 cm

The ratio is 26.5/24.1 = 1.09, which fits the expected proportion.

## References:

- National Center for Biotechnology Information (NCBI) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3573298/
- American Journal of Physical Anthropology https://onlinelibrary.wiley.com/journal/10968644

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