| Quadratmikrometer | square micrometer square micrometre |
| Quadratkilometer | square kilometre |
| Quadratmillimeter | square millimeter square millimetre |
| Quadratzentimeter | square centimeter |
| Quadratdezimeter | square decimetre |
| Quadratmeter | square meter square metre |
| Quadrokopter | quadcopter |
| Quartiermeister | quartermaster |
| Mikrometer | micrometre micrometer |
| Quadrocopter | quadcopter |
| Quadratmeile | square mile |
| Quadratsekunde | second |
| Quadratwurzel | square root |
| quadratförmig | square square-shaped |
| quadrillionste | septillionth |
| Luminometer | photometer |
| Adaptometer | adaptometer |
| Aräometer | areometer |
| Eudiometer | eudiometer |
| Radiometer | radiometer |