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What are the sizes of bacteria?
Posted March 2, 2023
Gram StainingGram-negativeGram-positivebacteria
Answer
The average size of bacteria is 0.2μm in diameter and 2−8μm in length. This is just the average size though. Sizes of bacteria can vary widely, with diameters ranging from 0.2μm to 2.0 μm.
Additional resources
Small but Mighty: Cell Size and Bacteria Gram Staining MycoLight™ Rapid Fluorescence Gram-Positive Bacteria Staining Kit

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