Molarity Calculator
Calculate molar concentration from mass, molar mass and volume.
About this tool
Molarity measures how concentrated a solution is, in moles of solute per liter of solution. Enter the mass of solute you dissolved, its molar mass, and the total solution volume to get the molarity.
Key Features
- Moles and molarity from mass and molar mass
- Works for any solute and solvent
- Pair with the Molar Mass Calculator to find molar mass from a formula
How to Use
- Enter the mass of solute in grams.
- Enter its molar mass (use the Molar Mass Calculator if you only have the chemical formula).
- Enter the total solution volume in liters.
- Click Calculate Molarity.
Benefits
- Prepare lab solutions at a precise concentration
- Check titration and dilution calculations
- Convert between mass and molar concentration
Frequently Asked Questions
Molarity (M) is moles of solute per liter of solution. Molality (m) is moles of solute per kilogram of solvent. They're close for dilute aqueous solutions but diverge for concentrated solutions or non-water solvents.
Use the Molar Mass Calculator with your compound's chemical formula (like NaCl or C6H12O6) to get its molar mass, then use that value here.