Shahzaib Hussain died after he was hit outside a mosque on Moss Street West in Ashton-under-Lyne, Greater Manchester.
Henry Barker, 20, of Failsworth, admitted causing death by careless driving but had denied causing death by dangerous driving.
He was convicted following a trial at Manchester Minshull Street Crown Court.
The court heard Shahzaib ran out onto the street from the mosque, where he had earlier attended afternoon prayers with his father and uncle, on 29 February.
A motorist has been found guilty of causing death by dangerous driving after an 11-year-old boy was fatally struck by a car.