dsDNA quantification calculator
Calculate DNA concentration and yield from A260 absorbance and purity ratios
Absorbance inputs
e.g. 5 μL sample diluted to 500 μL → dilution factor = 100
Results
Fill in the parameters and click "Calculate" to see results
Reference ranges
| Ratio | Pure DNA | Protein contamination | Organic/salt contamination |
|---|---|---|---|
| A260/A280 | 1.8 – 2.0 | < 1.8 | — |
| A260/A230 | 2.0 – 2.2 | — | < 1.5 |