CFU / mL Calculator
Dilution- and plated-volume-corrected viable count
CFU / mL Calculator
Dilution- and plated-volume-corrected viable count
Calculated locally in this browserColumn order: dilution_fraction, plated_volume_mL, colony_count
Editable data table
| dilution_fraction | plated_volume_mL | colony_count | |
|---|---|---|---|
Paste CSV / TSV
Analysis result
| Dilution fraction | Plated volume mL | Colonies | CFU / mL |
|---|---|---|---|
| 1.000e-4 | 0.1 | 86 | 8.600e+6 |
| 1.000e-4 | 0.1 | 92 | 9.200e+6 |
| 1.000e-5 | 0.1 | 11 | 1.100e+7 |
⚠ At least one plate is outside the common 30–300 colony working range; apply your method-specific countability rules.
Data requirements
Enter one or more valid dilution, plated volume and colony count rows.
dilution_fraction, plated_volume_mL, colony_countReview before reporting
Research use only. Validate raw data, exclusions and interpretation against the approved analysis plan.
Check raw observations, excluded rows, model assumptions and study-specific acceptance criteria before using the result.
Transparent analysis
Inputs are processed locally in your browser. Review the calculation policy, limitations and verification approach before reporting a result.
Read the methodology →