Fielding Percentage Calculator
Calculate fielding percentage from putouts, assists and errors.
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What this tool does
Calculate fielding percentage from putouts, assists and errors. Fielding percentage rewards sure-handedness only — it does not credit range, positioning or arm strength, which is why modern analysis supplements it with range-based metrics.
How to use the Fielding Percentage Calculator
- Enter or select putouts.
- Enter or select assists.
- Enter or select errors.
- Read the calculated result; change any measurement to compare alternatives.
Formula
fielding percentage = (putouts + assists) ÷ (putouts + assists + errors)
- po
- Putouts
- a
- Assists
- e
- Errors
Fielding percentage rewards sure-handedness only — it does not credit range, positioning or arm strength, which is why modern analysis supplements it with range-based metrics.
Worked example
For fielding percentage calculator, the following measurements illustrate the exact method: Putouts: 300; Assists: 80; Errors: 5.
Inputs
- Putouts300
- Assists80
- Errors5
Result
- Fielding percentage0.99
- Total chances385
- Error rate (%)1.3
Results explained
- Fielding percentage
- Fielding percentage from the formula above. Fielding percentage rewards sure-handedness only — it does not credit range, positioning or arm strength, which is why modern analysis supplements it with range-based metrics.
- Total chances
- Total chances from the formula above. Fielding percentage rewards sure-handedness only — it does not credit range, positioning or arm strength, which is why modern analysis supplements it with range-based metrics.
- Error rate (%)
- Error rate (%) from the formula above. Fielding percentage rewards sure-handedness only — it does not credit range, positioning or arm strength, which is why modern analysis supplements it with range-based metrics.
Frequently asked questions
It depends on position: first basemen and outfielders often finish above .990, middle infielders around .970–.985, and third basemen and catchers lower because their chances are harder. League average overall is about .985.
A fielder who never reaches a ball can't make an error on it, so a slow fielder can post a better percentage than a rangy one who gets to more balls and occasionally boots one. Range metrics correct for that.
Usually no — errors are charged when a misplay prolongs an at bat or allows advancement, but a dropped foul with no advancement is typically not scored an error. Official scorer judgment decides.
Yes, with zero errors it is exactly 1.000 (shown as 'perfect' fielding), though small samples make it common — qualifiers need hundreds of chances for it to mean much.
The putout goes to the fielder who records the out (catches the ball, tags the runner or touches the base); an assist goes to each fielder who throws or deflects the ball to help make that out.