ERA Calculator: Baseball & Softball Earned Run Average

Use our free ERA calculator to find your exact Earned Run Average. Adjust for 9, 7, or 6-inning games to perfectly calculate ERA for any baseball or softball league.

Enter Dimensions

Quick Presets
League Regulation Innings
Runs
Advanced Settings
Innings

Estimated Results

Enter your innings pitched and earned runs to see your ERA.

Calculate Your Earned Run Average Instantly

Our free ERA Calculator makes it simple to find a pitcher's exact Earned Run Average. Whether you are tracking pitching stats for professional baseball, college, high school, or youth softball, our tool provides instant, mathematically perfect results based on your league's regulation innings.

Why Use Our Baseball ERA Calculator?

Custom League Formats

Easily toggle between standard 9-inning baseball, 7-inning softball/high school, and 6-inning youth leagues.

Extra Outs Input

Stop guessing decimals. Simply input your full innings and select your extra outs to get the exact math automatically.

Instant Pitching Analytics

Lightning-fast results update live as you type, giving you immediate feedback on pitching performance.

How to Use the ERA Calculator

1

Select Regulation Innings

Choose the length of a standard game for your league (e.g., 9 for MLB/College, 7 for High School).

2

Enter Innings Pitched

Input the number of full innings pitched, and use the dropdown to add any extra outs recorded.

3

Enter Earned Runs

Input the total number of earned runs allowed by the pitcher.

4

View Your ERA

The calculator will instantly display the pitcher's Earned Run Average.

Earned Run Average Formula

ERA = (Earned Runs × Regulation Innings) ÷ Innings Pitched

To manually find a pitcher's ERA, multiply the total earned runs allowed by the regulation innings in a standard game. Then, divide that number by the total innings pitched. Remember that extra outs are calculated as thirds of an inning (0.333 or 0.667).

💡 Earned vs. Unearned Runs

When using this tool, be sure to only input Earned Runs. Runs that score as the direct result of a fielding error or a passed ball are considered "unearned" and do not count against a pitcher's ERA.

Pitching Stats Frequently Asked Questions

How to calculate ERA?
If you are wondering how is era calculated, the formula is simple: multiply the earned runs allowed by the regulation innings, then divide by the total innings pitched. This is exactly how do you calculate era across all levels of the sport.
How is ERA calculated in baseball?
When looking at how to calculate era in baseball specifically, you must use 9 as the regulation innings multiplier. To understand how do you calculate era in baseball manually, just use the standard equation: (Earned Runs × 9) ÷ Innings Pitched.
How do you calculate an ERA?
To learn how to calculate an era accurately, you must first convert partial innings (outs) into decimals. That is how is an era calculated by official scorekeepers—by counting every out recorded as one-third (0.333) of an inning.
How to calculate ERA baseball stats with errors?
When learning how era is calculated, it is crucial to remember that unearned runs do not count. If a run scores due to a fielding error, you ignore it. How to calculate era baseball stats correctly relies entirely on only counting the runs the pitcher actually earned.

Guides & Resources for this Tool

guide

How to Calculate ERA in Baseball

Wondering how is ERA calculated? Learn exactly how to calculate ERA in baseball using the standard f...

use case

ERA Calculation for 7 Innings: High School & Softball

Discover the exact ERA calculation for 7 innings. Perfect for high school baseball and softball pitc...