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Calcimator

Baseball ERA Calculator

Calculate a pitcher's Earned Run Average (ERA) from earned runs and innings pitched. Supports fractional innings notation.

Inputs

Results

Earned Run Average

3.29

ERA Rating (1-5)3
Quality Level (1-5)3
How to Use This Calculator
  1. Enter the pitcher earned runs allowed.
  2. Input the total innings pitched, including partial innings as a decimal (e.g., 6.2 innings).
  3. Review the Earned Run Average (ERA) calculated as (earned runs divided by innings pitched) times 9.
  4. Compare the ERA against MLB averages: under 3.00 is excellent, 4.00-5.00 is league average.
  5. Track ERA across multiple seasons and input the combined totals to calculate career ERA.
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