calculate
lock Free · Private · In-Browser
Molarity Calculator
Find molarity from moles of solute and volume.
Concentration in moles per litre
Molarity is the workhorse concentration unit of chemistry: how many moles of a substance are dissolved in each litre of solution. It sets how reactions and dilutions are planned.
Dissolving 0.5 moles in 2 litres gives a 0.25 molar solution. Enter the moles of solute and the solution volume for the molarity.
Fundamental and private
The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
What is molarity?
Concentration in moles of solute per litre of solution — the most common concentration unit in chemistry.
What is the formula?
Molarity equals moles of solute divided by the volume of solution in litres.
What units?
Moles and litres give molarity in moles per litre, written M.
Take it further
All Free Tools
Browse the full set of free, private, in-browser tools.