Baseball Pitcher Earned Run Average Calculator

Calculate a baseball pitcher's Earned Run Average (ERA) based on innings pitched, runs scored, hits, walks, and home runs.

Input Parameters

Calculation Results

Calculation Formula

ERA = 9 × (ER / IP)

Where:
ERA = Earned Run Average
ER = Earned Runs Scored
IP = Innings Pitched

Result

Earned Run Average (ERA): --

Baseball Pitcher Earned Run Average Calculator Usage Guide

Learn how to use the Baseball Pitcher Earned Run Average Calculator and its working principles

What is Earned Run Average (ERA)?

Earned Run Average (ERA) is a statistic used in baseball to measure a pitcher's effectiveness. It indicates the number of earned runs a pitcher allows per nine innings pitched. Lower ERA values indicate better performance.

How to Use This Calculator

  1. Enter the number of innings pitched (IP) - this can be a decimal (e.g., 7.2 for 7 and 2/3 innings)
  2. Enter the number of runs scored (ER) - these are the runs that are earned due to the pitcher's performance
  3. The calculator will automatically compute the ERA based on the formula: ERA = 9 × (ER / IP)

Important Notes

  • Ensure you're entering earned runs, not total runs (unearned runs are not included in ERA calculations)
  • ERA is typically compared among pitchers to determine who is performing better
  • A lower ERA (e.g., 2.50) is better than a higher ERA (e.g., 4.00)