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Free online tool

Serial Dilution Calculator

Generate concentrations across repeated equal-fold dilution steps.

Reviewed/updated September 8, 2026
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What is the Serial Dilution Calculator?

Generate concentrations across repeated equal-fold dilution steps. ITS Research Solution keeps the interactive tool above the explanation so you can calculate first and then review the method used.

Formula or method

Concentration at step n = initial concentration / dilution factorⁿ.

How to use this tool

Enter the requested values using consistent units, run the calculation and review the main result plus any supporting values. Starting at 100 µg/mL with 1:2 serial dilution gives 50, 25, 12.5 µg/mL and so on.

Interpretation and limitations

This calculator assumes the same dilution factor at every step. Always check source data, units, rounding and discipline-specific requirements before using a result in assessed, published, regulated or high-stakes work.

Questions

Frequently asked questions

How is this result calculated?

Concentration at step n = initial concentration / dilution factoru207f.

Can I use this result in formal academic or research work?

Use it as a transparent calculation aid, then verify the assumptions, units, rounding and any institution-, journal- or field-specific requirements before formal use.