ERA Calculator
Calculate Earned Run Average (ERA) for baseball and softball pitchers. Convert innings and outs to precise ERA calculations with proper fractional innings handling.
Pitching Statistics
Enter pitching statistics to calculate Earned Run Average
Formula: ERA = (Earned Runs ÷ Total Innings) × Game Innings
Total Innings = Whole Innings + (Outs ÷ 3). Each out represents 1/3 of an inning.
ERA Results
Enter pitching statistics and click Calculate to see ERA.
Understanding ERA in Baseball
What is ERA?
Earned Run Average (ERA) measures how many earned runs a pitcher allows per nine innings pitched. It's one of the most important statistics for evaluating pitcher performance.
ERA Interpretation
- Under 2.00: Excellent
- 2.00-3.00: Very Good
- 3.00-4.00: Good
- 4.00-5.00: Average
- Above 5.00: Below Average
Sample Calculation
Example: Pitcher Statistics
Earned Runs: 15
Innings: 65
Outs: 2
Game Innings: 9
Calculation:
Total IP = 65 + (2/3) = 65.67
ERA = (15 ÷ 65.67) × 9
ERA = 2.06