Microscopic · #987 biggest of 1,014
How big is a dust particle?
50 µm
A dust particle measures 50 µm. That's about 6.67 red blood cells lined up end to end.
By the numbers
- That's 50 micrometers (µm) — far too small to see with the naked eye.
- You'd need about 34,000 of them stacked up to reach the height of an average adult.
- Roughly 6.67 red blood cells could line up across it.
- Out of all 1,014 things in this collection, it ranks #987 by size.
Size comparison
How dust particle stacks up against things of a similar size. Tap any bar to explore it.
human hair (width)
70 µm
human hair (width)
70 µm
pixel on a phone screen
60 µm
sperm cell
50 µm
dust particle
50 µm
skin cell
30 µm
white blood cell
15 µm
fog droplet
10 µm
red blood cell
7.5 µm
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
It's so small that about 20 of them would fit across a single millimeter.
More in Microscopic
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