Cell Density Calculator

Calculate cell density from optical density (OD600), cell counts, or biomass measurements.

Density Measurement

Measurement Type

OD600 Value

Conversion Factor (cells/mL per OD)

OD600 is linear between 0.1-0.8. Dilute samples with higher OD values.

400.00 × 10⁶

cells/mL

Within linear range

E. coli (8×10⁸/OD)400.00 × 10⁶

Yeast (3×10⁷/OD)15.00 × 10⁶

Mammalian (1×10⁶/OD)500.00 × 10³

Early log phaseOD 0.1 - 0.3

Mid-log phaseOD 0.4 - 0.6

Late log phaseOD 0.7 - 1.0

Stationary phaseOD > 1.0