Free ERA Calculator Online
Determine pitcher Earned Run Average (ERA) statistics for baseball based on earned runs and innings pitched.
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Frequently Asked Questions (FAQ)
What does ERA stand for?
ERA stands for 'Earned Run Average', which is the mean number of earned runs a pitcher allows per nine innings pitched.
What is the ERA formula?
The formula is: ERA = (Earned Runs * 9) / Innings Pitched.
What is considered a good ERA in MLB?
An ERA below 4.00 is generally considered good, while elite pitchers often maintain ERAs below 3.00.
How are partial innings counted?
Partial innings are usually entered as decimals (e.g. 1/3 of an inning is 0.1, 2/3 is 0.2 in standard box scores, but mathematically they are 0.33 and 0.67 respectively). This calculator accepts mathematical decimals.
Is my stats tracker private?
Yes, all computations are executed local to your web browser.