M = mol/L is simple to state and easy to misapply when you're solving for moles or volume instead of molarity — the formula needs rearranging, and that's where lab-report mistakes creep in.
Molar concentration calculator, pick your unknown
Choose "Molarity," "Moles of solute," or "Volume of solution" from the dropdown, and this calculator shows only the two fields you need — the algebra is handled for you.
Moles to molarity calculator, and the other two directions
1 mole of solute in 2 liters of solution gives 0.5 mol/L — enter any two of the three values for any concentration scenario, not just that one.
Solution concentration calculator, starting from grams
Only have a mass in grams, not moles? Use the Molecular Weight Calculator first to convert grams to moles (moles = grams ÷ molecular weight), then bring that number here.
