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Science Calculators

Dilution Factor Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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ml
ml
Verified formula Private

Dilution factor

10.0000

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Dilution Factor Calculator

The Dilution Factor Calculator works out your dilution factor in an instant. Enter final volume and initial (sample) volume and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the final volume.
  2. Enter the initial (sample) volume.
  3. Read off your dilution factor — the calculator updates automatically, with no button to press.

Formula

The Dilution Factor Calculator uses the formula:

Dilution factor = Final volume ÷ Initial (sample) volume

Worked example

For example, with final volume of 100 ml and initial (sample) volume of 10 ml, the dilution factor is 10.0000.

Inputs used
Final volume 100 ml
Initial (sample) volume 10 ml
Results
Dilution factor 10.0000

Results are estimates for educational use, not professional advice.

Key terms explained

Volume
The amount of three-dimensional space an object occupies, measured in cubic units.

Frequently asked questions

Divide the final volume by the initial sample volume. 10 ml made up to 100 ml is a dilution factor of 10.

The sample is diluted ten-fold, so its concentration is one tenth of the original.

Divide the original concentration by the dilution factor to get the diluted concentration.

Repeated dilutions where factors multiply, such as three ten-fold steps giving a total factor of 1000.

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