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SCIENCE
Physical - Chemistry
Most Common Elements in the Human Body
This list features the most common elements in the human body. *These values are for an average human body weighing 70kg.
RANK | ELEMENT | ABUNDANCE % |
1 | Oxygen | 61.42% |
2 | Carbon | 22.86% |
3 | Hydrogen | 10.00% |
4 | Nitrogen | 2.57% |
5 | Calcium | 1.43% |
6 | Phosporous | 1.11% |
7 | Potassium | 0.20% |
8 | Sulfur | 0.20% |
9 | Sodium | 0.14% |
10 | Chlorine | 0.14% |
11 | Magnesium | 0.03% |
12 | Iron | 0.01% |
13 | Fluorine | 0.00371% |
14 | Zinc | 0.00328% |
15 | Copper | 0.00010% |
16 | Iodine | 0.00002% |
17 | Manganese | 0.00002% |
18 | Molybdenum | 0.00001% |
19 | Selenium | 0.00001% |
20 | Chromium | 0.00001% |
21 | Cobalt | 0.000002% |
References
Visual Capitalist (2023). The elemental composition of the human body. Available at: https://www.visualcapitalist.com/the-elemental-composition-of-the-human-body/ [Accessed 1 December 2025].
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