Modern human brain size comparison: how tall is the Modern human brain?
Modern human brain: 9.3 cm · 0' 4" tall
Brain mass 1.35 kg (1.00× human) · size estimated from mass · about 86 billion neurons
Modern human brain is 9.3 cm · 0' 4" tall. That is about 18.4× shorter than an average man (171 cm). Compare it side by side with people, animals, buildings and more on the board above — drag, zoom, switch cm / ft, or export an image.
Modern human brain in other units
| Unit | Size |
|---|---|
| Centimetres | 9.3 cm |
| Metres | 0.09 m |
| Feet and inches | 0' 4" |
| Inches | 3.7 in |
How small is it next to a person?
An average man (171 cm) is about 18.4 times as tall as Modern human brain. It would reach about his shin or ankle.
What is about the same size as Modern human brain?
| Compared with | Size | Difference |
|---|---|---|
| Neanderthal brain (Human species) | 9.4 cm · 0' 4" | 0.14 cm taller (1.5%) |
| Chipmunk (Mammals) | 10 cm · 0' 4" | 0.7 cm taller (7.5%) |
| Bottlenose dolphin brain (Mammals) | 9.8 cm · 0' 4" | 0.54 cm taller (5.8%) |
| Softball (Balls) | 9.7 cm · 0' 4" | 0.4 cm taller (4.3%) |
| Croquet ball (Balls) | 9.2 cm · 0' 4" | 0.1 cm shorter (1.1%) |
| Rat (Mammals) | 9 cm · 0' 4" | 0.3 cm shorter (3.2%) |
| Hummingbird (Birds) | 9 cm · 0' 4" | 0.3 cm shorter (3.2%) |
| Homo heidelbergensis brain (Human species) | 9.1 cm · 0' 4" | 0.24 cm shorter (2.6%) |
More in Human species
- Sahelanthropus brain (estimate) — 6 cm · 0' 2"
- Ardipithecus brain — 5.8 cm · 0' 2"
- Australopithecus afarensis brain — 6.4 cm · 0' 3"
- Australopithecus africanus brain — 6.5 cm · 0' 3"
- Paranthropus boisei brain — 6.7 cm · 0' 3"
- Homo naledi brain — 6.7 cm · 0' 3"
- Homo habilis brain — 7.1 cm · 0' 3"
- Homo floresiensis brain — 6.3 cm · 0' 2"
- Homo erectus brain — 8.1 cm · 0' 3"
- Homo heidelbergensis brain — 9.1 cm · 0' 4"
- Neanderthal brain — 9.4 cm · 0' 4"
- Early Homo sapiens brain — 9.5 cm · 0' 4"