Baseball Calculators
Professional baseball statistics calculators for players, coaches, and analysts. Compute batting averages, ERA, WHIP, WAR, OBP, slugging percentage, and more using official MLB formulas.
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Batting Average Calculator
Calculate a batter's batting average (BA) from hits and at bats.
ERA Calculator
Calculate Earned Run Average (ERA) for baseball pitchers.
Fielding Percentage Calculator
Calculate fielding percentage from putouts, assists, and errors.
FIP Calculator
Calculate Fielding Independent Pitching (FIP) for advanced pitcher analysis.
Magic Number Calculator
Find the baseball magic number — wins needed to clinch the division.
On Base Percentage Calculator
Calculate On Base Percentage (OBP) including walks and hit by pitch.
OPS Calculator
Calculate OPS (On-base Plus Slugging) the key offensive stat in baseball.
Slugging Percentage Calculator
Calculate slugging percentage from singles, doubles, triples, and home runs.
WAR Calculator
Estimate Wins Above Replacement (WAR) — the all-in-one baseball player value stat.
WHIP Calculator
Calculate WHIP (Walks plus Hits per Inning Pitched) for pitchers.
Frequently asked questions
A:Batting Average is calculated as Hits divided by At Bats. A BA of .300 is considered excellent at the MLB level.
A:An ERA under 3.00 is considered excellent; under 4.00 is above average. Higher ERAs indicate less effective pitching.
A:WAR (Wins Above Replacement) combines batting, baserunning, and fielding value relative to a replacement-level player, measured in wins.
A:WHIP (Walks plus Hits per Inning Pitched) measures how many baserunners a pitcher allows per inning. A WHIP under 1.20 is excellent.
A:FIP (Fielding Independent Pitching) measures pitcher performance on outcomes they control directly: strikeouts, walks, and home runs, scaled to ERA.