Baseball & Softball Calculators
Professional statistical analysis tools for baseball and softball. Calculate batting averages, ERA, OPS, fielding percentages, and more. Free tools for players, coaches, and analysts.
Last updated: February 2026
All Calculators (75)
Adjusted Batting Wins Calculator
Adjusted Batting Wins quantifies the number of wins a player contributes to their team through their offensive performance, adjusted for league and ballpark factors. It translates a player's offensive value, measured in runs, into a wins metric that reflects their relative impact on team success compared to the average batter.
Adjusted ERA+ Calculator
Adjusted ERA+ (ERA+) is a normalized pitching statistic that measures a pitcher's effectiveness by comparing their earned run average (ERA) to the league average ERA, while accounting for the influence of the ballpark in which they pitch. It expresses performance relative to league average, with 100 representing an average pitcher after adjustments. Values above 100 indicate better-than-average pitching, while values below 100 indicate worse performance.
Adjusted OPS Plus Calculator
Adjusted OPS Plus (OPS+) is an advanced baseball statistic that measures a player's on-base plus slugging (OPS) relative to the league average, while accounting for the influence of the player's home ballpark. An OPS+ of 100 represents league-average performance; values above 100 indicate better-than-average hitting, and values below 100 indicate below-average hitting.
Adjusted On-Base Plus Slugging (OPS+) Calculator
Adjusted On-Base Plus Slugging (OPS+) is a normalized offensive metric that evaluates a player's overall batting productivity by comparing their On-Base Plus Slugging (OPS) to the league average OPS while adjusting for the ballpark's influence. It quantifies how a player's OPS performs relative to league context and park effects, with 100 representing league average performance.
Adjusted Pitching Runs Calculator
Adjusted Pitching Runs (APR) quantifies the number of runs a pitcher prevents compared to an average league pitcher, scaled to the number of innings pitched. It reflects how much better or worse a pitcher is at run prevention relative to the league norm, adjusting for innings workload. A positive APR indicates above-average run prevention, while a negative APR suggests below-average performance.
Adjusted Pitching Wins Calculator
Adjusted Pitching Wins (APW) is a baseball statistic that estimates the number of wins a pitcher contributes to their team after adjusting for league context and ballpark factors. It quantifies a pitcher's effectiveness by translating their pitching runs into an equivalent number of wins, providing a more context-neutral measure of pitching value.
At Bats per Home Run (AB/HR) Calculator
At Bats per Home Run (AB/HR) is a baseball statistic that quantifies the average number of official at bats a player requires to hit one home run. It serves as a direct measure of a player's power-hitting efficiency, indicating how frequently a player hits home runs relative to their opportunities at the plate.
At Bats per Strikeout (AB/K) Calculator
At Bats per Strikeout (AB/K) measures the average number of official at bats a player has before striking out. It reflects a player's ability to make contact and avoid strikeouts during their plate appearances. This stat is useful to gauge a hitter’s contact skills and patience at the plate.
Base Running Runs Above Average Calculator
Base Running Runs Above Average (BsR) quantifies how many runs a player contributes to their team through base running compared to an average player at the same position and playing time. It captures the net value of a player's ability to take extra bases, steal bases, avoid outs on the basepaths, and generally improve scoring opportunities. A positive BsR indicates above-average base running performance, while a negative value suggests below-average effectiveness.
Base-Out Runs Added Calculator
Base-Out Runs Added (RE24) quantifies the impact of a player's plate appearance on their team's run expectancy by measuring the change in expected runs from the start to the end of the event, accounting for the number of outs and the base runner configuration. It reflects how many runs a player directly contributes or costs their team during that specific situation.
Base-Out Runs Saved Calculator
Base-Out Runs Saved (RE24) quantifies the impact of a player's plate appearance on the expected number of runs scored by their team based on the current base-out state. It measures how much a player’s action increases or decreases run expectancy given the number of outs and the arrangement of base runners. Essentially, RE24 captures the run value added or lost during a single batting event.
Base-Out Wins Added Calculator
Base-Out Wins Added (WPA/LI) quantifies a player's impact on their team's chance of winning by measuring the change in win probability they generate during a plate appearance, normalized by the leverage of the game situation. This adjustment allows the stat to highlight how valuable a player's contribution was relative to the pressure and importance of the moment.
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