Tools

Oligo properties (MW/Tm), GC content calculator, salt-adjusted Tm. Research oligonucleotide tools.

What you can do

Compute molecular weight, Tm, GC%, and ε260 from DNA or RNA sequence with Oligo Properties. Use Salt Adjusted Tm for molarity, stock concentration, and dilution. View DNA/RNA 3D in the DNA/RNA 3D Structure and Double Helix Builder; export sequences (FASTA), reports (PDF), and structures (PDB/PNG) via Export and Batch Analysis Export. New to the site? Start with the Getting started guide.

DNA/RNA sequence → molecular weight, Tm, GC%, charge, secondary structure. PDF export.

Salt-adjusted Tm; molarity and dilution for oligo solutions.