# How can you convert between molarity and molality?

By definition, $\text{molarity"="moles of solute"/"volume of solution}$...and thus the units of $\text{molarity}$ are $m o l \cdot {L}^{-} 1$. On the other hand, $\text{molality"="moles of solute"/"kilograms of solvent}$...and thus $\text{molality}$ is temperature independent given that mass, unlike volume, is UNAFFECTED by ambient pressure.
For dilute AQUEOUS solutions....$\text{molality"~="molarity}$.