Michał Winiarski was born in Bydgoszcz, Poland. He graduated from the Sports Championship School in Spała. He studied at the Management and Administration College in Opole. On 13 May 2006, he married Dagmara (née Stęplewska). On 28 November 2006, (after a match of the World Championship with Russia), their son Oliwier was born. On 13 March 2014, his wife gave birth to their second son, named Antoni.