Tools
Quick calculators for everyday oligo work. All run in your browser.
Extinction coefficient
Compute ε at 260 nm and molecular weight from our monomer library, with the hypochromicity correction.
Concentration / yield
Convert OD₂₆₀ to concentration (mM) using your dilution factor and extinction coefficient.
Oligo mass calculator
Mass, ε, GC% and Tm, the n−1 coupling-failure ladder, and a match for a mass you measured.
Melting temperature and GC content
Nearest-neighbour Tm at your salt and strand concentration, with GC%, length and the modification corrections applied.
Sequence converter
Turn FASTA or HELM into Assemblon notation, resolved against our monomer library.
Looking for a price?
Pricing depends on the sequence, the modifications, the scale and the purification, so we quote per project rather than from a calculator. Send us the sequence and we will come back with a quotation.