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Daltons to Grams per Mole Converter

↔ Convert g/mol to Da instead

Common Conversions

Da g/mol
1 1
10 10
18.015 18.015
58.44 58.44
100 100
180.16 180.16
342.3 342.3
1000 1000
10000 10000
66500 66500
100000 100000
1000000 1000000

Why this conversion matters in chemistry

The dalton describes the mass of a single molecule, written in atomic mass units. Grams per mole describes a mole of those molecules. The two units are numerically the same — a peptide with a measured mass of 5807.6 Da has a molar mass of 5807.6 g/mol — because the gram is defined as Avogadro's number of u. The conversion is the identity, but it sits at a useful junction in any workflow that moves between mass spectrometry and stoichiometry. An MS-determined insulin mass of 5808 Da becomes the 5808 g/mol that a dosing-mass calculation needs without any further arithmetic.

Formula

g/mol = Da × 1

Worked Examples

18.015 Da = 18.015 g/mol

Water — the most-cited reference for the identity, since the same value lives in every general-chemistry textbook.

342.30 Da = 342.30 g/mol

Sucrose — the disaccharide whose molar mass anchors a lot of carbohydrate-chemistry calculations.

66500 Da = 66500 g/mol

Bovine serum albumin — the protein-chemistry molar-mass workhorse, equivalent to 66.5 kDa.

58.44 Da = 58.44 g/mol

Sodium chloride — the textbook molar-mass example, with the same number in both unit conventions.

Frequently Asked Questions

Are daltons and g/mol the same?
Numerically, yes. A molecule with a mass of X daltons has a molar mass of exactly X g/mol. The dalton measures individual molecular mass; g/mol measures the mass of a mole. The numerical identity is built into the definitions.
Why have two units at all?
Daltons describe a single molecule, which is the natural framing in mass spectrometry. Grams per mole describe a mole of molecules, which is the natural framing in stoichiometry. The two units link through Avogadro's number — exactly Nₐ daltons make a gram.
When is each unit preferred?
Mass spectrometry, proteomics, and polymer-science work tends to write in daltons. General chemistry, biochemistry teaching, and any stoichiometry calculation defaults to g/mol. Both notations describe the same number, which is why the conversion is the identity.