Platelet
A platelet is a small blood-cell fragment that helps form clots and stop bleeding after a blood vessel is damaged.
Also known as: blood platelet, thrombocyte
How big is it?
3 µm · representative diameter
Representative diameter · representative
Typical recorded range: 2 µm to 4 µm.
A little perspective
Platelet vs Yeast cell: length comparison
The characteristic size of a yeast cell is about 1.67 times the diameter of a platelet.
A platelet is a small blood-cell fragment that helps form clots and stop bleeding after a blood vessel is damaged.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. Horizontal rulers compare the selected spans; vertical brackets also identify height on the artwork.
Measurements, assumptions & sources +
Platelet
Representative diameter: 3 µm; representative; range 2 µm–4 µm.
A representative inactive human platelet about 3 µm across. Platelets vary in size and change shape dramatically when activated; the illustration is a resting schematic.
University of Utah — Cell size and scale
The marked representative diameter is calibrated. Unmeasured illustration details are representative.
Yeast cell
Characteristic size: 5 µm; representative.
A chosen 5 µm yeast cell; species and growth stage alter its size.
University of Utah — Cell size and scale
The marked characteristic size is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 3 µm
We compare the diameter of a platelet. This is a representative comparison value; individual specimens or conditions can vary. The recorded range is 2 µm to 4 µm.
A representative inactive human platelet about 3 µm across. Platelets vary in size and change shape dramatically when activated; the illustration is a resting schematic.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 3 µm | 2 µm to 4 µm | representative |
Around this scale
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Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Sources and method
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The source records and measurement method remain available for inspection.
- University of Utah — Cell size and scaleApproximate biological size regimes. Atlas specimens and geometric assumptions are individually labelled.
There’s always another scale
Follow your curiosity.
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