Concentration Calculator

Your details

Choose what to solve for. All three modes use the same molarity formula M = n / V.
Molecular weight of the solute (e.g. NaCl = 58.44 g/mol, glucose = 180.16 g/mol).
g/mol
Mass of the solute dissolved in the solution.
g
Mass of the solvent (not the total solution). Used for molality and mass percent.
g
Total volume of the prepared solution. Used for molarity and ppm.
mL
MolarityModerate concentration
0.1mol/L

Moles of solute per litre of solution

Molality0.1mol/kg
Mass percent (w/w)0.581%
Volume percent (v/v)0.584%
Parts per million5,844ppm
Parts per billion5,844,000ppb
Moles of solute0.1mol
Summary5.844 g of solute (0.1000 mol) dissolved in 1000 mL gives 0.1000 mol/L.
Molarity (mol/L)0.1
Molality (mol/kg)0.1

Molarity: 0.1000 mol/L

  • Your solution contains 0.1000 moles of solute, equivalent to 0.1000 mol/L.
  • In mass/volume ppm, this is 5844.0 ppm (mg of solute per litre of solution).
  • The mass percent (w/w) is 0.581%, which is the fraction of the total solution mass that is solute.
  • To dilute this to a lower molarity, use C1V1 = C2V2: multiply your current molarity by your current volume, then divide by the target molarity to get the final volume.

Next stepCheck solubility limits before preparing high-concentration solutions. Many salts have maximum solubility well below 6 mol/L at room temperature.

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