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Peptide Tool

Molarity Calculator

This molarity calculator can help you calculate the relationship between the mass, the concentration and the volume of a solute in a particular solution, the equation:
  • =
Instructions for use:
*Select the corresponding units
*Empty out the desired variable, fill in the other two variables

Peptide Property Calculator

Enter Peptide Sequence in Box (use one letter code)

Molecular Weight: g/mol
Three letter code:

This peptide property calculator is a web-based tool to calculate the peptide chemical formula, molecular weight and length. The Ontores peptide property calculator is based on the following table.

Amino Acid Table

Amino Acid 3-Letter Code 1-Letter Code Molecular Weight Hydropathy
Alanine Ala A 89.09 6.3
Cysteine Cys C 121.16 7.0
Aspartate Asp D 133.10 1.0
Glutamate Glu E 147.13 1.0
Phenylalanine Phe F 165.19 7.2
Glycine Gly G 75.07 4.1
Histidine His H 155.16 1.3
Isoleucine Ile I 131.18 9.0
Lysine Lys K 146.19 0.6
Leucine Leu L 131.18 8.2
Methionine Met M 149.21 6.4
Asparagine Asn N 132.12 1.0
Proline Pro P 115.13 2.9
Glutamine Gln Q 146.15 1.0
Arginine Arg R 174.20 0.0
Serine Ser S 105.09 3.6
Threonine The T 119.12 3.8
Valine Val V 117.15 8.7
Tryptophan Trp W 204.23 3.6
Tyrosine The Y 181.19 3.2
Asaragine or Aspartic acid Asx B 132.61 1.0
Glutamine or Glutamic acid Glx Z 146.64 1.0
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