CFU Calculator

Calculate Colony Forming Units (CFU) per mL from plate count data.

Plate Count Data

Colony Count

Dilution Factor

Volume Plated (mL)

CFU Formula

CFU/mL = (Colonies × DF) / V

Countable range: 25-250 colonies

CFU/mL

450.00 × 10⁶

Log₁₀: 8.65

Calculation Details

Colony Count45

Dilution Factor1.00 × 10⁶

Volume Plated0.1 mL

CFU/Liter450.00 × 10⁹