Pepkio · Tool workspace
Sequence Property Calculator
Compute MW, pI, GC%, and concentrations from pasted multi-FASTA DNA, RNA, and protein in one table.
Mass:Topology:Strand:
Nucleic acid MW uses 5′ monophosphate form (restriction-cut DNA convention). Synthetic oligos with 5′/3′ OH are ~79 Da lower per strand vs IDT/OligoCalc.