The standard number of rounds in a championship boxing match is typically 12. Each round lasts three minutes, with a one-minute rest period in between. This format allows both fighters to showcase their skills over an extended duration, testing their endurance and strategy. In some cases, championship fights can go up to 15 rounds, but this has become less common. The aim is to win by knockout, technical knockout, or points, emphasizing the importance of stamina and tactical planning throughout the match.