Earned Run Average Calculator

Earned Run Average (ERA) Calculator helps baseball pitchers determine their performance by calculating the number of earned runs they've allowed per nine innings pitched.

Input Parameters

Number of runs scored against the pitcher while they were pitching

Total innings pitched (including fractions)

Calculation Results

Calculation Formula

ERA = (9 × Earned Runs) / Innings Pitched

Where:
ERA: Earned Run Average
Earned Runs: Runs scored while the pitcher was pitching
Innings Pitched: Total innings pitched (including fractions)

ERA measures a pitcher's effectiveness. Lower ERA values indicate better performance.

Earned Run Average Calculator Usage Guide

Learn how to use the Earned Run Average Calculator and understand its significance in baseball statistics

How to Use the Calculator

  1. Enter the number of earned runs allowed by the pitcher in the given innings.
  2. Input the innings pitched (including fractions, e.g., 7.2 innings).
  3. Click the Calculate button to compute the ERA.
  4. The result will be displayed in the ERA field.

Understanding Earned Run Average (ERA)

Earned Run Average (ERA) is one of the most important statistics for evaluating pitchers in baseball. It represents the number of earned runs a pitcher allows per nine innings pitched.

ERA Benchmarks

  • Excellent: Below 2.00
  • Good: 2.00–3.00
  • Average: 3.00–4.00
  • Bad: Above 4.00

Example Calculation

If a pitcher allows 3 earned runs in 6.2 innings, their ERA would be calculated as:

ERA = (9 × 3) / 6.2 = 27 / 6.2 = 4.35