Chauvin was found guilty of second-degree murder by a jury at the end of April. The defence has demanded a suspended sentence for Chauvin; the prosecution, on the other hand, wants 30 years in prison.
Floyd's violent death on May 25, 2020, during a police operation in Minneapolis had triggered demonstrations against racism and police violence in the US.
Videos document how police officers pushed the unarmed man to the ground. Chauvin pressed his knee on Floyd's neck for a good nine minutes while he begged for breath. Floyd lost consciousness and died.
The officers had arrested him on suspicion of paying for a packet of cigarettes with a fake 20-dollar note.
The white ex-cop was also found guilty of third-degree murder and second-degree manslaughter.
Despite the three-part guilty verdict, Chauvin's sentence is to be imposed only for the most serious charge, according to experts, under current law in the state of Minnesota.
Because of the special gravity of the crime, which Judge Peter Cahill has already recognized, Chauvin faces up to 40 years in prison.