All things · Under the Microscope

Sunflower pollen: how big is it?

Sunflower pollen is about 35 µm. In everyday terms, that is ≈ 330,000 hydrogen atoms.

Size

35 µm

In metres

3.50 × 10⁻⁵ m

Everyday comparison

≈ 330,000 hydrogen atoms

Chapter

Under the Microscope

Did you know?

Sunflower pollen is covered in tiny spikes that help it cling to visiting bees.

How it compares

• Roughly the same size as Skin cell (30 µm).
• About 2× smaller than Human hair (width) (70 µm).

Other things of a similar size

• Red blood cell 7.5 µm
• White blood cell 12 µm
• Skin cell 30 µm
• Human hair (width) 70 µm
• Human egg cell 120 µm
• Paramecium 220 µm

Sizes are rounded, typical values drawn from standard reference sources, including NIST/CODATA physical constants and NASA's planetary fact sheets. Real objects vary; see About for how sizes are chosen.