Baseball ERA Calculator

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

Earned Runs

Innings Pitched

Tab to move between fields

Earned Run Average

3.29

ERA Rating (1-5)3

Quality Level (1-5)3

How to Use This Calculator

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

How the result changes with Earned Runs

Earned Runs: Total earned runs allowed by the pitcher. Unearned runs (from errors) are excluded.
Innings Pitched: Total innings pitched using baseball notation (e.g. 6.1 = 6⅓ innings, 6.2 = 6⅔ innings).

Earned Run Average: Average earned runs allowed per 9 innings pitched. Lower is better.
ERA Rating (1-5): 1 = Below Average (>4.50), 2 = Average (3.76-4.50), 3 = Above Average (3.01-3.75), 4 = Excellent (2.01-3.00), 5 = Elite (≤2.00).
Quality Level (1-5): Overall pitching quality on a 1-5 scale based on ERA thresholds.

Identify Input Parameters
Earned Runs = 24, Innings Pitched = 65.2 = 2 input(s) provided
Calculate Earned Run Average
Earned Run Average
3.29 = 3.29
Calculate ERA Rating
3 = 3
Calculate Quality Level
3 = 3