About the Concentration Calculator
Convert between g/L, mol/L, mass percent, ppm and mg/mL for any solute.
Also known as: concentration converter, g/l to mol/l, ppm to mg/l, solution strength.
How to use this calculator
- Enter solute formula (for molarity), value is in, value, solution density.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
g/L ÷ M = mol/L · ppm ≈ mg/L for dilute water solutions
Worked example
Using the values pre-filled in the calculator above:
- Solute formula (for molarity): NaCl
- Value is in: grams per litre
- Value = 10
- Solution density = 1 g/mL
the calculator returns:
- Grams per litre: 10 g/L
- Molarity: 0.171116 mol/L
- Mass percent: 1 %
- Parts per million: 10 ppm