Molarity Calculator
Moles = mass/molar mass; molarity = moles/final solution volume in litres.
Inputs and units
- Solute mass (g): Enter your value in the format and unit shown.
- Molar mass (g/mol): Enter your value in the format and unit shown.
- Final solution volume (mL): Enter your value in the format and unit shown.
Calculation method
Moles = mass/molar mass; molarity = moles/final solution volume in litres.
Worked example
The example values are: Solute mass (g) = 5.844; Molar mass (g/mol) = 58.44; Final solution volume (mL) = 1000
- Moles: 0.1
- Molarity (mol/L): 0.1
Assumptions and limitations
Use final solution volume, not just solvent volume. Purity, hydration and temperature can affect preparation.
Using your result
Select Calculate after changing inputs. Copy result copies the displayed output; Download result saves a text file. Reset returns the form to its example inputs. Calculations run in your browser.
Molarity Calculator FAQs
What method does this calculator use?
Moles = mass/molar mass; molarity = moles/final solution volume in litres.
What should I check before using the result?
Use final solution volume, not just solvent volume. Purity, hydration and temperature can affect preparation.