Molarity Calculator
Use this molarity calculator to calculate solution concentration in molarity. Enter amount of solute and solution volume, or the values needed by the tool and review the molarity or missing concentration value.
Molarity
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Moles of solute —
In mmol/L —
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How it works
Molarity M = (mass ÷ molar mass) ÷ volume in litersHow to use the Molarity Calculator
Start by entering amount of solute and solution volume, or the values needed by the tool. Keep the units consistent and check that each value belongs to the same question.
The result gives the molarity or missing concentration value. Keep amount and volume units consistent and use the correct molar amount. Use it as a guide and check any instructions, rules or professional advice that apply.
Frequently Asked Questions
What does this molarity calculator calculate?
It gives the molarity or missing concentration value. Keep amount and volume units consistent and use the correct molar amount.
What information should I enter?
Enter amount of solute and solution volume, or the values needed by the tool. Use the same units throughout so the result is easier to understand.
What does molarity describe?
It describes the amount of solute per unit volume of solution.