Run Average (RA) Calculator (Baseball)

LAST UPDATE: March 8th, 2020

Run Average (RA) Calculator

What is Run Average?

Run average is a pitching metric used in baseball to show runs allowed per inning pitched average over a regular game length (most leagues are nine innings, softball, and some minor leagues can be six or seven innings).
It is an alternative to the more popular Earned Run Average (ERA), which removes unearned runs from the pitching equation. RA, on the other hand, includes all runs allowed that occur while the pitcher is pitching whether they are responsible for them or not.
While it is primarily a pitching metric, it can also be used to evaluate a team’s defensive performance as a whole.

How to calculate Run Average

In Baseball, Run Average calculates as:
RA = Innings per Regulation Game x (Runs / (Innings Pitched + (Outs (Partial Innings) Pitched / 3))


A pitcher has 69 runs allowed across 202 innings and 1 out pitched. The league they play in has a regulation time of 9 innings.
RA = 9 x (69 / 202.333333)
RA = 9 x 0.3410
RA = 3.069
This pitcher’s run average 3.069, or an average of 3.069 runs allowed per 9 innings of play.

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