Direct answer
Virus particles span a wide range. ScaleTrip places a typical influenza virion near 100 nm, a small-virus range around 20–80 nm and larger poxviruses around 200–400 nm.
Representative value100 nm
In meters1 × 10⁻⁷ m
Measurement typeTypical diameter
Put it in context
What are we measuring at this scale?
These values describe representative virion dimensions, not the size of an infected cell. Shape and the chosen axis can also change which dimension is reported.
Conceptual visualization
Influenza virion
A typical influenza particle is around one hundred nanometres across.
Source and verification
Where the value comes from
NCBI Bookshelf — Viruses and Cells
ScaleTrip keeps the 80 nm–120 nm range and the typical diameter label visible together.