Calculate On-Base Percentage with precision. Professional baseball analytics at your fingertips.
Use this on-base percentage calculator to quickly find a baseball player’s OBP. Just enter the player’s at-bats, hits, walks, hit-by-pitch, and sacrifice flies to see how often they reach base. Keep in mind that times reaching base through a fielder’s error or fielder’s choice are not included in the calculation.
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Learn why On-Base Percentage is crucial for baseball analytics
On-Base Percentage measures how frequently a batter reaches base per plate appearance. It's one of the most important offensive statistics in baseball.
OBP is a better predictor of run scoring than batting average. Teams with higher OBP typically score more runs and win more games.
MLB average is around .320. A .400 OBP is considered elite, achieved by only the best hitters in the game.
Everything you need to know about On-Base Percentage
Batting average only counts hits divided by at-bats, while OBP includes walks and hit-by-pitch, giving a more complete picture of how often a player reaches base.
In Major League Baseball, the average OBP is around .320. An OBP of .360 is considered good, .380 is excellent, and .400 or higher is elite.
Walks represent the batter's ability to avoid making outs, which is valuable to the team. A walk is as good as a hit for getting on base and advancing runners.
OBP is a key component of many advanced metrics like OPS (On-Base Plus Slugging) and wOBA (Weighted On-Base Average). It's heavily weighted in player evaluation and contract negotiations.
Sacrifice flies are added to the denominator because they represent a plate appearance, but they don't count against a player's OBP since the batter intentionally made an out to advance a runner.
No, the maximum OBP is 1.000, which would mean a player reached base in every single plate appearance. The highest single-season OBP in MLB history is Barry Bonds' .609 in 2004.