Concentration, Quantified

Molarity is the workhorse concentration unit: moles of solute per liter of solution. This molarity calculator solves the triangle — molarity, moles, volume — whichever piece is missing, and handles the dilution equation M₁V₁ = M₂V₂.

The Formula Triangle

M = mol ÷ L. Two known values give the third: weigh out moles × molar mass grams of solute, dissolve to the calibration mark, and you have a precise solution. The calculator's four modes cover every rearrangement plus dilutions.

Why Dilution Is Free

Diluting never changes how many moles are present, so M₁V₁ = M₂V₂ always holds. Stock solutions are sold concentrated precisely so labs can dilute — the calculator tells you the final volume and the water to add in one step.