Peptide name:
Protein sequence:
Output format:

Enter name of your peptide in input box. Don't forget that peptide names are case sensitive ! Valid names are e.g. H-Tyr-Ala-OH, Boc-Gly-OH or H-Asp(OtBu)-OMe. Results of this program contain these properties of the peptide: molecular formula, monoisotopic molecular weight, average molecular weight, elementar composition and amino acid composition.

If you would like to calculate your own molecular formula you can type something like this: {KSCN} or Ac-O-{Zn}-O-Ac. List of the abbreviations used by PeptCalc is available here. Peptide containing disulphide bridge H-Cys()-Pro-Pro-Pro-Pro-Cys()-OH, same sequence without disulphide bridge H-Cys-Pro-Pro-Pro-Pro-Cys-OH.

Peptide Calculator was used by counter user(s) since 26/Oct/2006.