Humans are made of roughly 50–60% water by weight , with most adults often quoted around 60%.

Quick Scoop: Core Answer

  • Adult humans are on average about 60% water.
  • The typical range is roughly 50–75%, depending on age, sex, and body composition.
  • Infants are much more watery (around 70–75%), while older adults can drop closer to the mid‑40% range.

Why The Percentage Varies

  • Age :
    • Infants: about 74% on average, with a range roughly 64–84%.
* The percentage gradually falls toward adult levels by puberty.
  • Sex and body type :
    • Adult men average close to 59–60% water.
* Adult women average closer to 50% because higher body fat and lower muscle mass reduce water percentage.

Inside The Body: Where That Water Is

Different parts of the body have very different water contents.

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Body part Approx. water percentage
Brain & heart ≈73% water
Lungs ≈83% water
Muscles & kidneys ≈79% water
Skin ≈64–70% water
Liver ≈70–75% water
Bones ≈31% water
So when people say “humans are about 60% water,” they are averaging lots of very watery tissues (like brain and blood) with drier ones (like bone).

Information gathered from public forums or data available on the internet and portrayed here.