A volume of $1 {\mathrm{m}}^3$  is equal to

The conversions of units are given below.

$1 {\mathrm{m}}^3$=${10}^6 {\mathrm{cm}}^3$    ; since 1m=${10}^2 \mathrm{cm}$

[ $\therefore$ The volume of gas in SI units is ${\mathrm{m}}^3$ , but this is a big unit. Hence the units commonly used ${\mathrm{cm}}^3 \left(\mathrm{or}\right) {\mathrm{dm}}^3$ , mL, Litres ]