ERA Calculator: Earned Run Average
Calculate a pitcher's Earned Run Average.
What is ERA?
Earned Run Average (ERA) is the most widely accepted statistic for evaluating a pitcher. It represents the number of earned runs a pitcher allows per 9 innings of play.
Calculation Method
- Formula: (Earned Runs × 9) ÷ Innings Pitched.
- Example: A pitcher allows 3 runs in 6 innings.
- Calculation: (3 × 9) = 27. Then 27 ÷ 6 = 4.50 ERA.
Baseball Stats FAQs
What is a good ERA?
In modern baseball, an ERA under 4.00 is average. An ERA under 3.00 is excellent, and anything under 2.50 is Cy Young Award caliber.
Do errors count towards ERA?
No. Runs scored resulting from fielding errors are considered 'Unearned Runs' and do not negatively affect the pitcher's ERA.