Animals · #971 biggest of 1,014
How big is the flea?
2.5 mm
The flea measures 2.5 mm. That's about 36 human-hair widths lined up end to end.
By the numbers
- That's 2.5 mm across — roughly the width of a few human hairs.
- You'd need about 680 of them stacked up to reach the height of an average adult.
- Roughly 36 human-hair widths could line up across it.
- Out of all 1,014 things in this collection, it ranks #971 by size.
Size comparison
How flea stacks up against things of a similar size. Tap any bar to explore it.
peppercorn
5.0 mm
sesame seed
3.0 mm
stapes (smallest bone)
3.0 mm
grain of pyrite
3.0 mm
flea
2.5 mm
chia seed
2.0 mm
tiny seed pearl
2.0 mm
tardigrade
5.0e+2 µm
grain of sand
5.0e+2 µm
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
It's so small that about 0.4 of them would fit across a single millimeter.
More in Animals
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