The formula for density is:

ρ=mV\rho =\frac{m}{V}ρ=Vm​

where ρ\rho ρ is density , mmm is mass, and VVV is volume.

What is the formula for density?

In words, density equals mass divided by volume.

This tells you how much “stuff” (mass) is packed into a certain amount of space (volume).

Common symbols and units:

  • Density ρ\rho ρ: kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).
  • Mass mmm: kilograms (kg) or grams (g).
  • Volume VVV: cubic meters (m³), cubic centimeters (cm³), or liters (L).

Mini example

  • Suppose an object has a mass of 500 kg and a volume of 2.5 m³.
  • Using ρ=mV\rho =\frac{m}{V}ρ=Vm​: ρ=5002.5=200\rho =\frac{500}{2.5}=200ρ=2.5500​=200 kg/m³.

So its density is 200 kg/m³.

Useful rearrangements

From ρ=mV\rho =\frac{m}{V}ρ=Vm​, you can also find:

  • Mass: m=ρ×Vm=\rho \times Vm=ρ×V.
  • Volume: V=mρV=\frac{m}{\rho}V=ρm​.

These are the same relationship, just solved for a different quantity.

TL;DR:
Density = mass ÷ volume, ρ=mV\rho =\frac{m}{V}ρ=Vm​, usually in kg/m³ or g/cm³.

Information gathered from public forums or data available on the internet and portrayed here.