Picomoles to Nanograms Converter (DNA)

Converting picomoles of DNA to nanograms requires knowing your sequence length — a step that trips up many lab workflows. Enter your DNA length (nucleotides), amount in picomoles, and DNA type (ssDNA or primer/oligonucleotide) into the Picomoles to Nanograms Converter to get the mass in nanograms. Secondary outputs include the calculated molecular weight and mass in micrograms. Also try the GC Content Calculator.

nt

Number of nucleotides in your DNA sequence

pmol

DNA amount in picomoles to convert

Type of DNA molecule

Results

Mass in Nanograms

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Molecular Weight

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Mass in Micrograms

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Frequently Asked Questions

What is the difference between ssDNA and primer calculations?

Both use the same calculation method since primers are single-stranded DNA oligonucleotides. The average molecular weight per nucleotide for ssDNA is approximately 330 g/mol. See also our Nanograms to Picomoles Converter (DNA).

How accurate is the molecular weight calculation?

The calculation uses an average molecular weight of 330 g/mol per nucleotide for ssDNA, which provides good accuracy for most applications. For precise work, consider the exact base composition.

What is the formula for converting pmol to ng?

Mass (ng) = Amount (pmol) × Molecular Weight (g/mol) × 10⁻³. The molecular weight equals the number of nucleotides × 330 g/mol for ssDNA. You might also find our DNA/RNA Molecular Weight Calculator useful.

Can I use this calculator for double-stranded DNA?

This calculator is specifically designed for single-stranded DNA and primers. For dsDNA, use approximately 660 g/mol per base pair instead of 330 g/mol per nucleotide.

What range of DNA lengths can I calculate?

The calculator works for DNA lengths from 1 to 10,000 nucleotides, covering short primers to long oligonucleotides and single-stranded DNA fragments.

Why use nanograms instead of micrograms for DNA quantification?

Nanograms are commonly used in molecular biology because typical working amounts of primers and short DNA fragments are in the nanogram range, making the units more convenient.