If you can't find a particular unit in the unit conversion tools, please help us by suggesting that unit to the database. We have designed a smart unit submission form that tends to understand your unit definition by calculating the unit expression and automatically suggest the parent physical quantity that the new unit should belong to. Any new unit submission is instantly visible in the unit data base in the 'pending status'. After a brief review from the moderator (usually, within couple of hours), unit will go to 'released status'. Once the unit is released in the data base, it is automatically available in all the unit conversion tools.