Nanograms to Picomoles Converter (DNA)

In molecular biology, converting between nanograms and picomoles of DNA requires knowing your sequence length — the Nanograms to Picomoles Converter (DNA) handles that math for you. Enter your DNA Amount and Number of Bases, then select your Conversion Direction (ng → pmol or pmol → ng) to get the Converted Amount. Secondary outputs include the calculated Molecular Weight of your DNA and the Conversion Formula applied.

ng

Weight of single-stranded DNA in nanograms

bases

Total number of nucleotide bases in the DNA sequence

pmol

Amount of single-stranded DNA in picomoles (for reverse conversion)

Results

Converted Amount

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Molecular Weight

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Conversion Formula

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Frequently Asked Questions

How do you calculate the molecular weight of single-stranded DNA?

The molecular weight of single-stranded DNA is calculated as 330 Da × number of bases. This uses the average molecular weight of a nucleotide (330 Daltons) multiplied by the sequence length.

What is the formula for converting nanograms to picomoles for ssDNA?

The formula is: pmol ssDNA = [ng ssDNA / (330 × # of bases)] × 1000. This accounts for the molecular weight and unit conversion from grams to picomoles.

What is the difference between ssDNA and dsDNA calculations?

Single-stranded DNA uses 330 Da per base, while double-stranded DNA uses approximately 660 Da per base pair. This calculator is specifically designed for ssDNA and primers.

Why are picomoles used for DNA quantification?

Picomoles are convenient units for DNA because they represent manageable numbers for typical laboratory quantities. They convert easily to other units and are commonly used in molecular biology applications.

What is the typical range of DNA concentrations in laboratory work?

Laboratory DNA concentrations typically range from nanograms to micrograms, with primer concentrations often in the picomole range. This calculator handles values from 0.0000001 ng to 10,000,000 ng.

Can this calculator be used for primers and oligonucleotides?

Yes, this calculator is designed for both single-stranded DNA and primers. Both use the same molecular weight calculation based on the number of nucleotide bases in the sequence.

How accurate is the 330 Da molecular weight for nucleotides?

The 330 Da value is an average molecular weight for nucleotides and provides sufficient accuracy for most laboratory calculations. Individual nucleotides vary slightly, but this average is widely accepted in molecular biology.