ERA Calculator

Formula

To calculate the Earned Run Average (\(ERA\)):

\[ ERA = \left(\frac{\text{earned runs}}{\text{innings pitched}}\right) \times \text{game innings} \]

Where:

Earned Runs is equal to total runs minus runs due to errors
Innings Pitched is the total innings pitched
Game Innings is the total innings in a game

What is Earned Run Average (ERA)?

Earned run average is a measure in baseball, softball, and cricket used to determine how good a pitcher is. It’s a ratio of runs (minus runs due to errors), innings pitched, and outs pitched. The fewer runs allowed, the lower the ERA a pitcher will have.

Example Calculation 1

Let's assume the following values:

Earned Runs = 5
Innings Pitched = 7
Game Innings = 9

Using the formula:

\[ ERA = \left(\frac{5}{7}\right) \times 9 \approx 6.43 \]

The Earned Run Average is approximately 6.43.

Example Calculation 2

Let's assume the following values:

Earned Runs = 3
Innings Pitched = 5
Game Innings = 7

Using the formula:

\[ ERA = \left(\frac{3}{5}\right) \times 7 \approx 4.20 \]

The Earned Run Average is approximately 4.20.