Enter common residues or custom element counts easily. See mass, percentages, and downloadable records quickly. Built for lab review, study checks, and formulation work.
| Amino Acid | Formula | Molar Mass (g/mol) |
|---|---|---|
| Glycine | C2H5NO2 | 75.067000 |
| Alanine | C3H7NO2 | 89.094000 |
| Serine | C3H7NO3 | 105.093000 |
| Cysteine | C3H7NO2S | 121.154000 |
| Tryptophan | C11H12N2O2 | 204.229000 |
The molar mass is the sum of each element count multiplied by its average atomic weight. The calculator uses carbon, hydrogen, nitrogen, oxygen, and sulfur for standard amino acid work.
Molar Mass = (C × 12.011) + (H × 1.008) + (N × 14.007) + (O × 15.999) + (S × 32.06)
If water molecules are removed, the adjusted composition becomes H = H − 2w and O = O − w, where w is the number of removed water molecules.
Moles = Sample Mass ÷ Adjusted Molar Mass
Amino acid molar mass is a core value used in laboratory chemistry, formulation work, peptide preparation, and educational calculations. It connects a molecular formula to a measurable mass in grams per mole. When a chemist knows the formula, the total mass can be built from elemental contributions.
This calculator supports both common amino acids and custom element counts. That makes it useful for routine checks and also for modified residues, protected intermediates, or condensed forms where water has been removed. The composition table helps verify whether the entered formula matches the expected chemistry before moving into batch work or analytical review.
The graph adds another layer by showing which elements contribute the most mass. For many amino acids, carbon and oxygen account for a large portion of the total, while sulfur becomes important in cysteine and methionine. That visual view is helpful during teaching, documentation, and formulation planning.
When sample mass is entered, the tool also returns moles. This is practical for preparing standards, checking stoichiometry, and estimating required reagent quantities. By combining molar mass, composition, graphing, and export functions, the page provides a complete chemistry workflow in one place.
It calculates amino acid molar mass from elemental composition. It can also adjust the result when water is removed and estimate moles from a given sample mass.
Yes. Choose a standard amino acid from the list and the calculator will load its elemental formula automatically for fast chemistry calculations.
Custom mode lets you enter your own counts of carbon, hydrogen, nitrogen, oxygen, and sulfur. It is useful for modified amino acids or residue variants.
Water removal models condensation changes, such as residue formation in larger structures. Each removed water subtracts two hydrogens and one oxygen from the formula.
Yes. Enter a sample mass in grams and the calculator divides that value by the adjusted molar mass to return moles.
The calculator uses average atomic weights for C, H, N, O, and S. These values are suitable for general chemistry calculations and educational work.
The graph displays elemental mass contributions in grams per mole. It helps you see which elements contribute most to the final molar mass.
Yes. You can download the summary as a CSV file or a PDF document, which is useful for records, study notes, and lab documentation.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.