Find sample amount, sample mass, or molecular mass by choosing the unknown and entering the other two quantities. Use n = m/M with molecular mass in Da approximately equal numerically to molar mass in g/mol. Daltons alone do not determine a sample’s moles. The Da-to-grams reference below describes mass conversion, a different calculation.

Find moles from sample mass and molecular mass.

Sample calculations use molecular mass in Da ≈ molar mass in g/mol. A sample mass is also required to find moles.

Related Calculators

Daltons to Grams Formula

The following formula is used to convert a mass in daltons (Da) to grams (g) using the dalton-to-gram conversion factor (the atomic mass constant expressed in grams per dalton).

mg = mDa × c

Variables:

  • mg is the mass in grams (g)
  • mDa is the mass in daltons (Da)
  • c is the conversion factor in grams per dalton (approximately 1.66053906892 × 10-24 g/Da)

To calculate the mass in grams, multiply the mass in daltons by the conversion factor (g/Da).

Daltons to Grams Conversion Table (1 Da ≈ 1.66053906892×10^-24 g)
Daltons (Da) Mass (g)
11.6605e-24
101.6605e-23
182.989e-23
284.650e-23
325.314e-23
447.306e-23
58.449.704e-23
751.245e-22
1001.6605e-22
180.162.992e-22
2003.321e-22
342.305.684e-22
5008.303e-22
1,0001.661e-21
5,0008.303e-21
10,0001.661e-20
20,0003.321e-20
50,0008.303e-20
100,0001.661e-19
1,000,0001.661e-18
*Using 1 Da ≈ 1.66053906892×10^-24 g. Conversion used: g = Da × 1.66053906892×10^-24.

What is Daltons to Grams Conversion?

Daltons to grams conversion is used to express a very small mass given in daltons (Da) in standard SI mass units (grams or kilograms). The dalton (Da), also called the unified atomic mass unit (u), is a unit of mass defined as 1/12 of the mass of a neutral carbon‑12 atom at rest in its ground state. To convert Da to grams, multiply by the conversion factor 1 Da ≈ 1.66053906892 × 10-24 g.

How to Convert Daltons to Grams?

The following steps outline how to convert daltons to grams.

  1. First, determine the mass in daltons (mDa).
  2. Next, use the conversion factor c ≈ 1.66053906892 × 10-24 g/Da.
  3. Finally, calculate the mass in grams using mg = mDa × c.
  4. Check the units: this reference converts a mass from Da to grams. For the calculator above, also specify the sample mass or amount and the molecular mass.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Mass in daltons (mDa) = 1.204428152e+24 Da

Conversion factor (c) = 1.66053906892 × 10-24 g/Da

Calculate the mass in grams (mg).