Molarity Calculator

Your details

Pick the unknown. The calculator ignores the field you are solving for and uses the other two.
Mass of the solid you are dissolving. Not used when solving for mass.
Formula weight in g/mol. NaCl = 58.44, glucose = 180.16, NaOH = 40.00. Check the reagent bottle or the reference table below.
g/mol
Total volume of the finished solution, not the volume of water added. Not used when solving for volume.
Desired molar concentration of the finished solution. Used when solving for mass or volume.
MolarityConcentrated (1 M - 10 M)
1mol/L
Moles of solute1mol
Mass of solute58.44g
Solution volume1L
Millimolar (mM)1,000mM
Micromolar (uM)1,000,000uM
Mass concentration (g/L)58.44g/L
Mass concentration58.44mg/mL
1 mol/L
Very dilute (< 1 mM)<0.001Dilute (1 mM - 100 mM)0.001-0.1Moderate (100 mM - 1 M)0.1-1Concentrated (1 - 10 M)1-10Highly concentrated (> 10 M)10+

Your solution is 1 M (1,000 mM).

  • You are dissolving 58.44 g of solute (1 mol) into 1,000 mL of solution.
  • Molarity = moles of solute per litre of total solution, not per litre of water added.
  • Make up to final volume after dissolving; use a calibrated volumetric flask for precision.

Next stepMass concentration: 58.44 g/L. To dilute this solution, use C1V1 = C2V2 in the dilution calculator.

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