Molarity Calculator
Calculate the molarity (molar concentration) of a solution from solute mass, molar mass, and solution volume. Essential for chemistry lab work and solution preparation.
Inputs
g
g/mol
L
Results
Molarity
1 M
Moles of Solute
1 mol
Millimoles1,000 mmol
Concentration58.44 g/L
Concentration58.44 mg/mL
Molality1.0621 mol/kg
How to Use This Calculator
- Enter solute mass (g) and molar mass (g/mol) to calculate moles of solute.
- Enter solution volume (L).
- Review molarity in mol/L (M) and moles of solute.
- To make a solution of known molarity: use the mass needed output to weigh the solute before adding solvent to volume.
- Check units carefully -- molarity is moles per liter, not per kg (which would be molality).
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Formula
Molarity (M) = moles / volume = (mass / molar mass) / volume. Where: moles = mass (g) / molar mass (g/mol), and volume is in liters.Related Calculators
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Calculate molar mass, convert between grams and moles, and find the number of molecules for elements and common compounds.
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Calculate density, mass, or volume using the formula ρ = m/V. Includes a reference table of common material densities.
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Calculate pH, pOH, hydrogen ion concentration, and hydroxide concentration. Determine if a solution is acidic, neutral, or basic.
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