# How do you get the mass with volume and no density?

Jun 26, 2016

Well, you could always just put it onto a scale to find the mass. But assuming you aren't talking about a laboratory setting...

The general formula is:

$\setminus m a t h b f \left(\rho = \frac{m}{V}\right)$

where $\rho$ is density in $\text{g/mL}$ if mass $m$ is in $\text{g}$ and volume $V$ is in $\text{mL}$.

So to get the mass...

$\textcolor{b l u e}{m = \rho V}$

Or to get the volume...

$\textcolor{b l u e}{V = \frac{m}{\rho}}$

When you have the volume and not the density, and you want to find mass, you will need to find the density yourself. It's often readily available on the internet.