0.01 mm
Scale anchored to a reviewed measurement
Uniformly scaled by disc diameter.
Human Red Blood Cell
A representative normal mature human erythrocyte, shown face-on as a biconcave disc about 7.5 µm in diameter. The comparison uses the face-on disc diameter rather than the smaller edge thickness.
Dimensions
- Height
- 0.01 mm
- Length
- 0.01 mm
- Width
- 0.01 mm
Quick facts
- Mean diameter
- about 7.5 µm
- Shape
- biconcave disc
- Nucleus
- absent when mature
Human Red Blood Cell · Size infographic

Related objects
Sources and measurement22 References
Dimensions were cross-checked against independent sources before publication.
Measurement basis
The comparison uses the face-on disc diameter rather than the smaller edge thickness.