Convert between molarity, molality, mass percent, mole fraction, ppm, normality, or g/L to mol/L.
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Use this calculator at the prep bench when you have two numbers and need the concentration in the unit the protocol asks for.
Pick the mode, then type the numerator and denominator it names. Molarity is moles ÷ litres; molality is moles ÷ kg solvent; mass percent is (solute mass ÷ solution mass) × 100; mole fraction is n ÷ (n + n_other); ppm is (mass ÷ mass) × 10⁶; normality is equivalents ÷ litres; g/L to M is (g/L) ÷ molar mass. The two number boxes change meaning with the mode. The denominator must be greater than zero.
This is a unit conversion among those definitions. It does not convert density or temperature, and it does not mix incompatible units for you.
Mode: Which definition to use.
Numerator: Moles, solute mass, solute moles, solute mass, equivalents, or g/L, matching the mode.
Denominator: Litres, kg solvent, solution mass, other moles, total mass, litres, or g/mol, matching the mode.
Result: Concentration in the unit of the selected mode.
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