Calculate a pitcher’s earned run average from earned runs and innings pitched, with partial innings written as .1 and .2. Enter your values; the result updates as you type, with the method shown below.
Formula
ERA = 9 × earned runs / innings pitched
Worked example
38 earned runs in 120⅓ innings: ERA 2.84.
Frequently asked questions
What is a good ERA?
Under 3.00 is excellent in Major League Baseball.
How are partial innings written?
120.1 means 120⅓ and 120.2 means 120⅔.
Softball?
Choose 7 innings per game.
Related calculators
Results are estimates for information only. Check important figures with a professional.