---
title: "Molar mass: research glossary | Sable Peptides"
description: "Molar mass is the mass of one mole of a chemical substance, expressed in grams per mole. Numerically it equals the average molecular mass in daltons. For a"
canonical: https://www.sablepeptides.co.uk/glossary/molar-mass
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Molar mass

Molar mass is the mass of one mole of a chemical substance, expressed in grams per mole. Numerically it equals the average molecular mass in daltons. For a peptide, molar mass based on average isotopic abundances differs from monoisotopic mass used in high-resolution mass spectrometry, so the appropriate value must be chosen for each calculation.

Source: [en.wikipedia.org](https://en.wikipedia.org/wiki/Molar_mass)

## Related terms

-   [Peptide](/glossary/peptide)
-   [Monoisotopic mass](/glossary/monoisotopic-mass)
-   [Resolution](/glossary/resolution)
-   [Mass spectrometry](/glossary/mass-spectrometry)

[Back to glossary A–Z](/glossary/terms)

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