DNA Concentration Calculator: Precisely Quantify Your Nucleic Acids

Calculate Nucleic Acid Concentration

Enter the absorbance value at 260 nm.
Choose the type of nucleic acid you are quantifying.

Results

Concentration: µg/mL

For more precise measurements, consider dilution factors and specific extinction coefficients if applicable.

Utilize our DNA Concentration Calculator to accurately determine the quantity of double-stranded DNA (dsDNA), single-stranded DNA (ssDNA), or RNA from your A260 absorbance readings. This vital tool helps molecular biologists and researchers ensure precise nucleic acid concentrations for critical experiments like PCR, qPCR, sequencing, and cloning, ensuring accurate experimental setup.

Formula:

The concentration of nucleic acids is typically calculated using the following formula based on absorbance at 260 nm (A260):

Concentration (µg/mL) = A260 × Factor

  • A260: Absorbance reading at 260 nm (e.g., from a spectrophotometer).
  • Factor: A nucleic acid type-specific conversion factor:
    • 50 for double-stranded DNA (dsDNA)
    • 33 for single-stranded DNA (ssDNA)
    • 40 for RNA

Note: This formula assumes a 1 cm path length and specific extinction coefficients for each nucleic acid type.

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