Earned Run Average Calculator
Calculate earned run average (ERA) for pitchers
Pitching Statistics
Enter pitching statistics to calculate Earned Run Average
Formula:ERA = (Earned Runs ÷ Total Innings) × Game Innings
Total Innings = Whole Innings + (Outs ÷ 3). Each out represents 1/3 of an inning.
ERA Results
Enter pitching statistics and click Calculateto see ERA.
Understanding ERA in Baseball
What is ERA?
Earned Run Average (ERA) measures how many earned runs a pitcher allows per nine innings pitched. It's one of the most important statistics for evaluating pitcher performance.
ERA Interpretation
- Under 2.00: Excellent
- 2.00-3.00: Very Good
- 3.00-4.00: Good
- 4.00-5.00: Average
- Above 5.00: Below Average
Sample Calculation
Example:Pitcher Statistics
Earned Runs: 15
Innings: 65
Outs: 2
Game Innings: 9
Calculation:
Total IP = 65 + (2/3) = 65.67
ERA = (15 ÷ 65.67) × 9
ERA = 2.06
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How to Use This Calculator
Step-by-step guide to get accurate results
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ERA Calculator: What It Is and How It Works
The ERA Calculator is a free online tool that helps calculate a pitcher’s Earned Run Average (ERA) instantly using earned runs and innings pitched. ERA measures how many earned runs a pitcher allows per nine innings — a key pitching statistic.
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How to Use the Calculator
Enter Earned Runs
Input the total earned runs allowed by the pitcher.
Enter Innings Pitched
Input the total innings pitched, including fractional innings (e.g., 6.1 = 6⅓ innings).
Click Calculate
See the ERA instantly.
Tip
Make sure inputs are accurate for precise results.
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Key Features
Instant Calculation
Get ERA in seconds.
Accurate & Reliable
Uses the standard formula: ERA = (Earned Runs ÷ Innings Pitched) × 9.
Easy-to-Use
No manual math needed.
Mobile-Friendly
Works on all devices.
Ideal for Fantasy Baseball & Analysis
Track pitcher performance easily for players, coaches, and analysts.
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Who Can Benefit
Pitchers & Coaches
Track performance per game, series, or season.
Fans & Analysts
Compare pitchers quickly.
Youth & Amateur Baseball
Simple tracking without complex calculations.
Fantasy Baseball
Evaluate pitcher value for drafts and scoring.
Scouts & Talent Evaluators
Assess consistency and effectiveness.
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Example Calculations
Example 1
3 ER ÷ 6 IP = 4.50 ERA
Example 2
72 ER ÷ 180 IP = 3.60 ERA
Example 3
5 ER ÷ 9 IP = 5.00 ERA
Example 4
20 ER ÷ 45 IP = 4.00 ERA
Frequently Asked Questions
What is an ERA Calculator?
It calculates a pitcher’s ERA using earned runs and innings pitched.
How is ERA calculated?
Formula: ERA = (Earned Runs ÷ Innings Pitched) × 9.
Does it include unearned runs?
No, only earned runs are counted.
Is the result accurate?
Yes, based on the inputs.
Can I use it for fantasy baseball?
Yes, it helps track pitcher stats quickly.
Is it mobile-friendly?
Yes, works on all devices.
Is it free?
Yes, completely free online.
Who should use it?
Players, coaches, fans, analysts, and fantasy enthusiasts.
Why use an ERA Calculator?
Saves time and ensures accurate calculations.
Can it track multiple games or seasons?
Yes, using cumulative earned runs and innings pitched.
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