Westminster Magistrates' Court heard that the 28-year-old was twice over the legal limit when he crashed his car following a night out on June 1, 2015.
Wasps player Cipriani, who had denied the charge, was also fined 7,620 pounds (about $10,450).
It is not the first time Cipriani, capped only 14 times for England despite once being touted as a golden boy, has found himself in trouble.
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In 2008 he was axed from the England squad after being photographed coming out of a nightclub two days before he was scheduled to make his starting debut.
In 2013 he was struck by a bus after a night out.
(Reporting by Martyn Herman; editing by Sudipto Ganguly)
