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Chemistry

Mass Concentration to Molar Concentration Calculator

Convert a mass concentration in grams per litre into molarity using the molar mass of the solute.

Your inputs

Change any value to update the result instantly.

Chemistry
g/L
g/mol

Molar concentration

1 mol/L

Millimolar

1,000 mmol/L

Mass concentration

58.44 g/L

Mass concentration

58.44 mg/mL

1 g/L is numerically the same as 1 mg/mL. Molar mass must be greater than zero.

What this calculator does

Converts a mass concentration in grams per litre into molar concentration.

What your result means

Molarity in moles of solute per litre of solution.

Formula and working

c = ρ_m ÷ M

  1. 1

    Collect the inputs

    Mass concentration (ρ_m) = 58.44 g/L; Molar mass (M) = 58.44 g/mol

  2. 2

    Apply the formula

    c = ρ_m ÷ M

  3. 3

    Result

    Molar concentration = 1 mol/L

Frequently asked questions

Symbols and assumptions

ρ_m
Mass concentration in g/L
M
Molar mass in g/mol
c
ρ_m ÷ M in mol/L
  • Mass concentration refers to the same solution volume as the molarity.
  • The solute's molar mass is known and greater than zero.

Sources and review

Reviewed 2026-09-22 · Next review 2027-09-22

  • Does not account for solution density changes or partial dissociation of the solute.

Important limitation

This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.

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