What Is a Bowling Handicap?

A bowling handicap calculator computes the bonus pins that level a league between bowlers of different skill. The USBC-approved formula takes your average, subtracts it from the league's basis score, and multiplies the gap by the league's handicap percentage. The result is added to every game you bowl, so a 150-average bowler gets a fair chance against a 190-average bowler.

The Formula

Handicap = (Basis Score − Average) × Percentage ÷ 100, rounded to the nearest pin. With a 220 basis and 90%, a 160-average bowler receives (220 − 160) × 0.9 = 54 pins per game. Handicaps are never negative — anyone averaging at or above the basis simply bowls scratch (zero handicap).

League Conventions

Most leagues set the basis score between 200 and 230 and the percentage between 80% and 100%. Some leagues cap the maximum handicap to prevent sandbagging. Check your league's rulebook and use those exact numbers here to predict your adjusted average for standings.