Concentration Converter illustration

Concentration Converter

Converts a solution concentration between molarity, grams per litre, mg/L (≈ ppm for dilute water) and percent w/v, using the molar mass of the solute.

Use the Molar Mass Calculator if you do not know it. NaCl is 58.44 g/mol.

Notes

  • Molarity = (g/L) / molar mass. Percent w/v is grams per 100 mL, so 1 % w/v = 10 g/L.
  • mg/L equals ppm only for dilute aqueous solutions where the density is close to 1 g/mL.