BABIP Calculator
BABIP measures how often balls put in play fall for hits, removing home runs and strikeouts. It's a key luck-and-regression signal for hitters and pitchers alike.
How it works
BABIP = (H − HR) ÷ (AB − K − HR + SF). The numerator is hits that stayed in the park; the denominator is at-bats that became balls in play, plus sacrifice flies. It answers how often in-play contact turned into hits.
Worked example
A hitter with 45 hits (5 of them home runs), 160 at-bats, 40 strikeouts, and 2 sacrifice flies: (45 − 5) ÷ (160 − 40 − 5 + 2) = 40 ÷ 117 = .342.
Frequently asked questions
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Sources
- MLB.com — Batting Average On Balls In Play
- MLB.com — Standard & Advanced Stats Glossary
- FanGraphs — Sabermetrics Library
- Baseball Reference — Glossary
Last reviewed March 1, 2025. Rules and manufacturer charts change — verify against current official sources each season.