DNA Molecular Weight

Calculate molecular weight of DNA sequences for single/double-stranded and linear/circular configurations.

Calculation Parameters

Single-stranded
Double-stranded
Linear
Circular

What is DNA Molecular Weight?

DNA Molecular Weight calculator determines the mass of DNA molecules in Daltons (Da), essential for calculating molar concentrations and copy numbers in molecular biology experiments.

How to Use This Calculator

Quick guide to get results:

  1. Paste your DNA sequence
  2. Select single or double-stranded
  3. Choose linear or circular molecule

When to Use

This tool is useful when you need to:

  • Calculate DNA concentration from absorbance
  • Determine copy number for cloning
  • Prepare molar solutions of DNA

Example Input

Sample plasmid sequence:

ATGCATGCATGCATGC

Supports FASTA format and multiple sequences.

Example Output

Molecular weight results:

MW: 15,869.4 Da 1 µg = 63.01 pmol

Includes copy number calculations.

FAQ

Q: What's the difference between linear and circular?
A: Linear DNA has 5' phosphate and 3' OH ends; circular DNA has none.

Q: Are the weights for DNA or RNA?
A: DNA (deoxy). RNA calculator is a separate tool.