The On-Base Percentage calculator computes the on-base percentage based on the number of hits, bases on balls, number time hit by pitch, number of at bats and number of sacrifice flies.
INSTRUCTIONS: Enter the following:
- (H) Number of hits
- (BB) Number of bases on balls
- (HBP) Number of hits by pitch
- (AB) Number of at bats
- (SF) Number of sacrificed flies
On-Base Percentage (OBP): The calculator returns the on-base percentage.
The Math / Science
The On-base Percentage is a measure of how often a batter reaches base for any reason other than a fielding error, fielder's choice, dropped/uncaught third strike, fielder's obstruction, or catcher's interference (the later two are ignored as either times-on-base or plate appearances in calculating OBP). The formula for On-base Percentage is :
`OBP=(H+BB+HBP)/(AB+BB+HBP+SF)`
where:
- OBP = On-base Percentage
- H = number of hits (times reached base because of a batted, fair ball without error by the defense)
- BB = number of bases on balls (also called a walk, hitter not swinging at four pitches called out of the strike zone and awarded first base)
- HBP = number of hits by pitch (times touched a pitch and awarded first base as a result)
- AB = number of at bats (Plate appearances, not including bases on balls, being hit by pitch, sacrifices, interference, or obstruction)
- SF = number of sacrificed flies (Fly ball hit to the outfield which although caught for an out, allow a baserunner to advance)
OBP is added to the to determine (OPS).
Baseball Stats Calculators
- Stolen Base Percentage
- On-base Percentage
- Slugging Percentage
- On-base Plus Slugging
- Times on Base
- Earned Run Average
- Batting Average
- Equivalent Average
- Defense-Independent Component ERA
- Fielding Independent Pitching
- Total Average
- Batting Average Against
- Range Factor
- Fielding Percentage
- Pythagorean Expectation
- Base Running Speed
- Bases per Plate Appearance
Baseball Base Separation:
- Major League Baseball Base Separation
- College Baseball Base Separation
- High School Baseball Base Separation
- Bronco League Base Separation
- Mustang League Base Separation
- Pinto League Base Separation
- Shetland League Separation
- Little League Base Separation
References
Wikipedia (https://en.wikipedia.org/wiki/On-base_percentage and https://en.wikipedia.org/wiki/Baseball_statistics)