Newborn baby
50 cm - Length; example.
A newborn baby is a human infant in the earliest period immediately after birth.
A 50 cm, 3.5 kg example. Not a health or growth benchmark.
Defined examples — our methodologyThe height of a human is about 3.5 times the length of a newborn baby. Selected basis: an example for Newborn baby; an example for Human; approximate values.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. Horizontal rulers compare the selected spans; vertical brackets also identify height on the artwork.
50 cm - Length; example.
A newborn baby is a human infant in the earliest period immediately after birth.
A 50 cm, 3.5 kg example. Not a health or growth benchmark.
Defined examples — our methodology1.75 m - Height; example.
A human is a primate of the species Homo sapiens, distinguished by habitual upright walking, language and complex tool use.
A defined adult standing 1.75 m tall with a mass of 70 kg. This is a consistent comparison specimen, not a global average or health benchmark.
Defined examples — our methodologyThere’s always another scale
Side by side

Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scaleGot a good eye for scale?