Input (grade 11): Other units derived from the bar are the megabar (symbol: Mbar), kilobar (symbol: kbar), decibar (symbol: dbar), centibar (symbol: cbar), and millibar (symbol: mbar or mb).
Output (grade 7): The bar (symbol bar), decibar (symbol dbar) and the millibar (symbol mbar, also mb) are units of pressure.