Earned Run Average (ERA) Calculator

About the ERA Calculator

The Earned Run Average (ERA) Calculator computes a pitcher's ERA in baseball, defined as the average number of earned runs allowed per nine innings pitched.

Baseball Statistics: ERA is a key metric for evaluating a pitcher’s effectiveness, with lower values indicating better performance.

Use this tool for analyzing pitching performance, scouting, or fan discussions.

• Features:
  • Calculates ERA using earned runs allowed and innings pitched.
  • Inputs: Earned Runs Allowed (integer), Innings Pitched (decimal allowed).
  • Keypad includes digits (0–9) and decimal point (.) for precise innings input.
  • Displays result as a number (e.g., 3.86).
  • Shows calculation steps in LaTeX format using MathJax.
  • Clear, backspace, and copy functionality for results.
  • Share or embed the calculator.
• Practical Applications: Useful for pitchers, coaches, analysts, or fans tracking performance.
• How to Use:
  • Enter earned runs allowed (non-negative integer) and innings pitched (non-negative number).
  • Use the keypad to input digits and decimal point for innings (e.g., 6.1 for 6 innings and 1 out).
  • Click "Calculate" to view the ERA.
  • Use "Clear" to reset or "⌫" to delete the last character.
  • Copy results or share/embed the calculator.
• Helpful Tips:
  • Earned runs exclude runs due to errors or passed balls.
  • Innings pitched can include decimals (e.g., 6.1 = 6 innings + 1 out, where 1 out = 1/3 inning).
  • ERA < 3.00 is excellent, 3.00–4.00 is average, > 4.00 is below average.
  • Innings pitched cannot be zero.
• Examples:
  • Example 1:
    • Inputs: Earned Runs = 4, Innings Pitched = 6.1
    • Calculation: \\(\\left( \\frac{4}{6.1} \\right) \\times 9 = 5.90\\)
    • Result: ERA = 5.90, Note: Below average
  • Example 2:
    • Inputs: Earned Runs = 2, Innings Pitched = 7
    • Calculation: \\(\\left( \\frac{2}{7} \\right) \\times 9 = 2.57\\)
    • Result: ERA = 2.57, Note: Excellent

Calculate ERA with ease using this ERA Calculator. Share or embed it on your site!