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As an industry-leading peptide vendor, GenScript offers not only high quality peptides ,but also a variety of free peptide tools to Make Your Research Easy.

Use our Peptide Molecular Weight Calculator to check the molecular weight of your peptide. You can also learn more detailed characters such as isoelectric point and hydrophilicity of your peptide of interest along with suggestions on the best solvent.


  • Sequence format: Single-letter-code or multiple-letter-code with{}.
    e.g. AC{GLY}{ILE}{d-ALA}
  • Modification: Select from the modification pull-down box
  • Disulfide bridge: Use format with position, like 5-12 (one bridge between No.5 and No.12 cysteine)

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  • Lucky New: lucky new list in previous rounds

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