CFU Calculator

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

Plate Count Data

Colony Count

Dilution Factor

Volume Plated (mL)

CFU/mL = (Colonies × DF) / V

Countable range: 25-250 colonies

450.00 × 10⁶

Log₁₀: 8.65

Colony Count45

Dilution Factor1.00 × 10⁶

Volume Plated0.1 mL

CFU/Liter450.00 × 10⁹

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.