CFU per mL Calculator
Colony count converted to CFU per mL.
About CFU per mL Calculator
Colony count converted to CFU per mL. The CFU per mL Calculator on Picscaler gives you the answer instantly in your browser, with no sign-up.
Inputs: Colonies counted, Dilution factor (for 10^-5 enter 100000) and Volume plated (mL). Results shown: CFU/mL.
Formula: CFU/mL = colonies x dilution factor / volume plated (mL). Use plates with 30 to 300 colonies for reliable counts.
This tool is for education and information. It does not replace clinical judgement, so confirm results against your laboratory's reference ranges and local guidelines.
How to use CFU per mL Calculator
- Enter Colonies counted, Dilution factor (for 10^-5 enter 100000) and Volume plated (mL).
- Press Calculate.
- Read CFU/mL in the result table.
- Use the formula and notes under the result to check the working.
Frequently asked questions
Is CFU per mL Calculator free?
Yes. CFU per mL Calculator is completely free to use on Picscaler.
Do I need to create an account?
No. You can use it straight away without signing up.
Is my data safe?
Your input is processed in your browser on your own device and is not uploaded to Picscaler.
Can I use it for medical decisions?
No. It is an educational aid and does not replace professional medical judgement.
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