There is no single "good" fielding percentage — the number is position-dependent by design. In MLB, first basemen and catchers typically field .990 or better, outfielders sit around .980–.990, second and third basemen range .950–.980, and shortstops — who take the most difficult chances on the field — hover near .970. Judging a shortstop against a first baseman's baseline misreads the stat completely.
The formula
Fielding percentage (FPCT) is clean chances over total chances, per the MLB glossary:
FPCT = (Putouts + Assists) ÷ (Putouts + Assists + Errors)
A putout goes to the fielder who records the out directly — the catch, the tag, the glove on the bag. An assist goes to any fielder who touched the ball on the way to an out, most commonly the infielder throwing to first. An error is charged when the official scorer judges that a play an ordinary fielder would have made wasn't made. The three together are the fielder's total chances.
A worked example
A shortstop's season: 250 putouts, 420 assists, 12 errors.
Total chances = 250 + 420 + 12 = 682
FPCT = (250 + 420) ÷ 682 = 670 ÷ 682 ≈ .982
At shortstop, .982 against a positional norm near .970 is an excellent sure-handedness season. The Fielding Percentage Calculator computes this from the three counting stats, with the chance total shown alongside the rate.
Why the bands differ so much by position
The positional gap isn't about skill — it's about the chances each position sees. First basemen mostly receive throws; catchers mostly catch pitches; both rack up hundreds of near-automatic putouts that pad the denominator with easy chances. Middle infielders field hard-hit grounders and turn double-plays on the run, and third basemen handle the hot corner's reaction-time plays. More difficult average chance, more errors per chance, lower positional baseline. This is why fielding percentage comparisons are only meaningful within a position, and why the record books track the stat position by position.
The stat's famous blind spot
Fielding percentage measures sure-handedness, not defense. An error can only be charged on a ball the fielder actually reached — so a fielder with poor range never gets near the tough plays, is never charged for them, and can post a sparkling percentage while converting fewer balls into outs than a rangier teammate with more errors. Taken to the extreme, a statue at shortstop who cleanly fields only the balls hit at him approaches 1.000.
Modern defensive metrics exist specifically to fill this gap: MLB's Outs Above Average uses Statcast tracking to measure how many outs a fielder converts relative to the probability of the play, range included. The two stats answer different questions — FPCT asks "does he make the plays he reaches?", OAA asks "how many plays does he make, period?"
One more caveat: the scorer's judgment
The error total in the denominator is an official scorer's call, and scorers vary — a bang-bang play ruled a hit in one park is an error in another. Over a full season the noise mostly washes out, but for small samples (a month, a youth-league season), a fielding percentage is only as consistent as the scoring behind it. That's worth remembering before treating a two-point difference between players as real.