List of NBA teams by single season win percentage

This is a list of the all-time best and worst regular season winning percentages in the NBA. Statistics accurate as of May 31, 2026. == Above .775 == === Notes === a Formula for average point differential: Average point differential = Total points for − Total points against Total games played {\displaystyle {\mbox{Average point differential}}={\frac {{\mbox{Total points for}}-{\mbox{Total points against}}}{\mbox{Total games played}}}} The Boston Celtics appear six times on the list, followed by the Los Angeles Lakers with four appearances, and the Chicago Bulls and Golden State Warriors with three each.

Source: Wikipedia — List of NBA teams by single season win percentage (CC BY-SA 4.0)