Microscopic · #1013 biggest of 1,014
How big is an atomic nucleus?
0.01 pm
An atomic nucleus measures 0.01 pm. It would take roughly 10,000 of them to span an atom.
By the numbers
- That's 0.01 pm — down at the scale of individual atoms.
- You'd need about 170 trillion of them stacked up to reach the height of an average adult.
- About 10,000 of them would fit across an atom.
- Out of all 1,014 things in this collection, it ranks #1013 by size.
Size comparison
How atomic nucleus stacks up against things of a similar size. Tap any bar to explore it.
buckyball (C60)
7.0e+2 pm
carbon atom
1.4e+2 pm
hydrogen atom
1.0e+2 pm
helium atom
62 pm
atomic nucleus
0.010 pm
proton
0.0017 pm
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
It's so small that about 100 billion of them would fit across a single millimeter.
More in Microscopic
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