If you are in search of grams to moles or moles to grams, then you are in the right place. This online calculator will help you with the conversion easily. Enter the mass, molar mass, or moles, and you’ll get the result instantly, along with the formula used in the calculation.
Grams ⇄ Moles Calculator
How to use Grams to Moles Calculator
- Choose whether you want to convert grams to moles or moles to grams.
- Enter the mass, unit (g, kg, mg, lb, oz), or the number of moles.
- Select a compound from the list or enter a custom molar mass.
- Click Calculate, and you will get the result.
Formula Grams → Moles Conversion
Formula Moles → Grams
When converting grams to moles, you can also determine the number of particles in the sample using Avogadro’s Number (6.022×1023). For a step further, check out our Avogadro’s Number Calculator, which can help you to calculate particles directly from moles.
Example
How can we find the number of moles in a 36 g sample of water (H₂O), given that the molar mass of water is 18 g/mol?
![\[\text{Moles} = \frac{\text{Mass (g)}}{\text{Molar Mass (g/mol)}}\]](http://cdn.chemicaltweak.com/wp-content/ql-cache/quicklatex.com-7fe10203a16c2d665bb045632b4125fe_l3.png "Rendered by QuickLaTeX.com")
![\[\text{Moles} = \frac{36}{18}\]](http://cdn.chemicaltweak.com/wp-content/ql-cache/quicklatex.com-497cbfb11a9f3c2c63b351935d66599e_l3.png "Rendered by QuickLaTeX.com")
![\[\text{Moles} = 2 \, \text{mol}\]](http://cdn.chemicaltweak.com/wp-content/ql-cache/quicklatex.com-acf61352149b0e13b5228f80fb2dbc41_l3.png "Rendered by QuickLaTeX.com")
Answer: Therefore, 36 g of H₂O is equal to 2 moles.
We have 3 moles of sodium chloride (NaCl), and the molar mass of NaCl is 58.44 g/mol. How can we determine the mass of this sample?
![\[\text{Mass (g)} = \text{Moles} \times \text{Molar Mass (g/mol)}\]](http://cdn.chemicaltweak.com/wp-content/ql-cache/quicklatex.com-45fb1ad8c4644c950c6f211b626661c3_l3.png "Rendered by QuickLaTeX.com")
![\[\text{Mass (g)} = 3 \times 58.44\]](http://cdn.chemicaltweak.com/wp-content/ql-cache/quicklatex.com-3e1f5ad19c0cd88a79aadc90dfb1ca72_l3.png "Rendered by QuickLaTeX.com")
![\[\text{Mass (g)} = 175.32 \, \text{g}\]](http://cdn.chemicaltweak.com/wp-content/ql-cache/quicklatex.com-451e3aa6bf59e07009ceccc40eb46d77_l3.png "Rendered by QuickLaTeX.com")
Answer: The mass of 3 moles of NaCl is 175.32 g.
FAQ (Grams to moles calculator)
1. How to convert grams to moles?
To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).
2. What is a mole in chemistry?
A mole is a standard unit in chemistry that represents 6.02214076×1023 particles (atoms, molecules, or ions).
3. How do I convert mass to moles?
You can convert mass to moles by dividing the mass of the substance in grams by its molar mass in grams per mole.