# What is the density of compressed natural gas (CNG) used in vehicles? [closed]

I would like to know the density of the compressed natural gas used for natural gas vehicles in order to complete the formula in this Mathematics Stack Exchange post.

## closed as off-topic by Todd Minehardt, airhuff, andselisk♦, Mithoron, Jon CusterApr 14 at 0:15

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The density of CNG at the pressure of 200 bars (which is optimized for use in vehicles) is 435 $\frac{kg}{m^3}$. However, it's (not usually) 175 $\frac{kg}{m^3}$ in some vehicles in some countries. Note that it differs according to your home country.