The Earned Run Average calculator computes the earned run average (ERA) based on the number of earned runs and the number of innings pitched.
INSTRUCTIONS: Enter the following:
Earned Run Average (ERA): The calculator returns the ERA.
The lowest career ERA is 1.82,
set by Chicago White Sox pitcher
Ed Walsh.
The Earned Run Average in baseball is the mean of earned runs given up by a pitcher per nine innings pitched (the traditional length of a game). It is determined by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine. Runs resulting from defensive errors (including pitchers' defensive errors) are recorded as unearned runs and omitted from ERA calculations. The formula for Earned Run Average is:
ERA=9•ER/IP
where:
Baseball Base Separation:
Wikipedia (https://en.wikipedia.org/wiki/Earned_run_average and https://en.wikipedia.org/wiki/Baseball_statistics)