Scale

Human height

From Preliminary Human Factors Guidelines for Traffic Management Centers (July 1999) FHWA, U.S. DoT

Stature (standing height) Adults: 5th % 50th 95th Males 5′ 3⁵⁄₈″ 162㎝ 5′ 8¹⁄₄″ 173㎝ 6′ ³⁄₄″ 185㎝ Females 4′ 11″ 150㎝ 5′ 2⁷⁄₈″ 160㎝ 5′ 7¹⁄₈″ 170㎝

Eye height (standing) Adults: 5th % 50th 95th Males 5′ ³⁄₄″ 154㎝ 5′ 4³⁄₄″ 164㎝ 5′ 8⁵⁄₈″ 174㎝ Females 4′ 9¹⁄₄″ 146㎝ 5′ ¹⁄₄″ 153㎝ 5′ 5¹⁄₄″ 166㎝

When people stand normally (i.e., with some slump), their eye height lowers by about 1.6 in (4.1 cm) for males and by about 1.2 in (3.0 cm) for females.

Extrapolating from the data, male/female eye height is ∼95%/∼97% of stature.

Body width (including arms) Adults: 5th % 50th 95th Males 18.8″ 20.9″ 22.8″ Females 57.3″ 60.3″ 65.3″

Sitting height Adults: 5th % 50th 95th Males 33.2″ 35.7″ 38.0″ Females 30.9″ 33.4″ 35.7″

6mm

6㎜	∶ 171㎝	≡ 1 ∶ 285
6㎜	∶ 67¹⁄₂″	≡ 1 ∶ 285³⁄₄
6㎜	∶ 172㎝	≡ 1 ∶ 286²⁄₃
¹⁄₄″	∶ 6′	≡ 1 ∶ 288
1″	∶ 25′	≡ 1 ∶ 300
6㎜	∶ 180㎝	≡ 1 ∶ 300
6㎜	∶ 6′	≡ 1 ∶ 304.8