Set the unit you want to use with the measurement. Just remember it is interactive. If you have selected meter(m) as unit and dimension is area then the unit will be a square meter(m²) automatically. Cubic Meter (m³) for Volume. You don’t have to type cubic meter or square meter. Type meter(m) will be Okay. 1st image unit is Ib and 2nd image unit is yd. For total it will calculate the unit depend on dimension.