Peptide Mass Calculator

Sequence (C-terminal -> N-terminal):
N-terminal group:
C-terminal group:
User defined residues:

1: 2:
3: 4:
5: 6:
7: 8:
Calculate using
Note:
Use one-character symbols for amino acids (V = valine, ...) or enter a user-defined residue (numbers 1-8). For N- and C-terminal groups: see predefined list, or select [other] and enter a mass.