The ERA Calculator finds a pitcher’s Earned Run Average, the standard measure of how many earned runs a pitcher allows per full game. Simply fill in the fields above and click Calculate to get an instant result.
This calculator is part of Calculate Wiki’s Sports Calculators collection.
What You’ll Need
- Earned Runs Allowed
- Innings Pitched (IP)
- Game Length — 9 innings (baseball) or 7 innings (softball/some leagues)
Formula Used
ERA = (Earned Runs × Game Length) ÷ Innings Pitched
Example Calculation
Using example inputs — Earned Runs = 60; IP = 150; Game Length = 9 innings — the ERA Calculator returns:
| Value | Result |
|---|---|
| Earned Runs | 60 |
| Innings Pitched | 150 |
| ERA | 3.60 |
3.60 ERA.
Helpful Information
Results from the ERA Calculator are based on standard formulas used in the sports calculators field. An ERA under 3.00 is considered excellent at the professional baseball level, with league averages typically falling around 4.00.
Frequently Asked Questions
Is the ERA Calculator free to use?
Yes — the ERA Calculator on Calculate Wiki is completely free, with no sign-up required.
How accurate is the ERA Calculator?
The ERA Calculator uses the standard, official formula for this statistic. Results are exact given accurate inputs.
Can I use this on my phone?
Yes, this calculator is fully mobile-friendly and works on any modern browser.
What does the result mean?
For the example values shown above (60 earned runs over 150 innings), the ERA is 3.60 — meaning the pitcher would be expected to allow about 3.6 earned runs per 9-inning game.