ERA Calculator

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Only count earned runs - runs scored due to pitching, not defensive errors or passed balls.
Use baseball scorecard notation: 6.1 = 6 full innings + 1 out, 6.2 = 6 innings + 2 outs. Or enter a true decimal like 6.333.
ERA is defined relative to a full game. Adjust this for non-standard leagues so the scale stays comparable.
The league-wide ERA average. Used to calculate ERA+. MLB modern average is around 4.00-4.50. Set to your league's figure for accurate comparison.
ERAAbove average
3.38

Earned Run Average - earned runs per 9 innings (or per game length selected)

ERA+119
Runs per start3.38
Quality ratingAbove average
Innings pitched (decimal)120
3.38 ERA
Elite<2Excellent2-3Above average3-4Average4-5Below average5-6Poor6+

ERA 3.38 - Above average

  • An ERA of 3.38 is above average, placing this pitcher among the top performers.
  • ERA+ of 119 means this pitcher is 19% better than the league average when adjusted for context.
  • With 120.0 innings pitched, this is a meaningful sample size - ERA is reliable at this workload.

Next stepTo get a fuller picture, pair ERA with WHIP (walks and hits per inning) and strikeout rate - ERA alone can mask luck on balls in play.

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