# What is ERA in Baseball and How to Calculate It

If you are looking for tips on calculating ERA (Earned Run Average), this article will be a helpful read. Here you will find the accurate procedure for calculating it in softball and baseball.

Omkar Phatak

Last Updated: Oct 06, 2017

*Earned Run Average*(ERA), while a batter is judged by his batting average.

Definition

An ERA is a number that sums up a pitcher's performance, based on his past performance. It is a measure of how many runs a pitcher gives up over a game of nine innings, on an average. It is the earned runs that he would have if he pitched for nine innings straight in a game.

Calculation in Baseball

Calculating it in baseball is quite simple. Just get hold of the number of total earned runs of a pitcher and the total number of innings for which he has pitched, and use the following formula.

*Formula for ERA Calculation in Baseball = [(Earned Runs) x 9] / (Innings Pitched)*

*twelve innings and one out*), then convert it to 12.33. If the number of innings pitched is 12.2 (

*twelve innings and two out*), then convert it to 12.666, before dividing the earned runs with it. Remember to consider earned runs only and do not confuse it with total runs.

Calculating it in Softball

In softball, the calculation remains almost the same, with the only difference being, that you multiply by 7 instead of 9. The formula used in softball is as follows:

*Formula for ERA Calculation in Softball = [(Earned Runs) x 7] / Innings Pitched*