---
title: "How many — the human body"
description: "8 counts and estimates in the the human body category, each with how the figure is arrived at and how confident it is."
url: https://atoneplace.net/how-many/body/
site: "At One Place"
---

# How many: the human body

8 the human body counts.

| Question | Answer |
| --- | --- |
| How many bones are in the human body? | 206 in an adult — about 300 at birth |
| How many cells are in the human body? | about 30 trillion human cells, plus 38 trillion bacteria |
| How many neurons are in the human brain? | about 86 billion |
| How many muscles are in the human body? | about 600 skeletal muscles |
| How many hairs are on your head? | about 100,000 |
| How many taste buds do you have? | about 2,000 to 8,000 |
| How long are all your blood vessels? | commonly quoted as 100,000 km — but probably closer to 20,000 |
| How many base pairs are in human DNA? | about 3.1 billion per copy — 6.2 billion in most cells |

- [How many bones are in the human body?](https://atoneplace.net/how-many/bones-in-the-human-body/) — 206 in an adult — about 300 at birth
- [How many cells are in the human body?](https://atoneplace.net/how-many/cells-in-the-human-body/) — about 30 trillion human cells, plus 38 trillion bacteria
- [How many neurons are in the human brain?](https://atoneplace.net/how-many/neurons-in-the-brain/) — about 86 billion
- [How many muscles are in the human body?](https://atoneplace.net/how-many/muscles-in-the-human-body/) — about 600 skeletal muscles
- [How many hairs are on your head?](https://atoneplace.net/how-many/hairs-on-your-head/) — about 100,000
- [How many taste buds do you have?](https://atoneplace.net/how-many/taste-buds/) — about 2,000 to 8,000
- [How long are all your blood vessels?](https://atoneplace.net/how-many/blood-vessels-length/) — commonly quoted as 100,000 km — but probably closer to 20,000
- [How many base pairs are in human DNA?](https://atoneplace.net/how-many/dna-base-pairs/) — about 3.1 billion per copy — 6.2 billion in most cells