# ERA Calculator (Earned Run Average)

URL: https://speedycalculator.com/calculators/sports/era/
Last updated: 2026-10-25

> The ERA calculator finds a pitcher’s earned run average, the earned runs allowed per nine innings, and WHIP, walks plus hits per inning pitched.

## Inputs

- Earned runs
- Innings pitched
- Walks
- Hits allowed

## Results

- ERA
- WHIP

## Formula

```
ERA = 9 × earned runs ÷ innings pitched
WHIP = (walks + hits) ÷ innings pitched
```

## Explanation

ERA is the most widely used pitching statistic; lower is better.

### How to use the ERA Calculator

- **Earned runs**
- **Innings pitched**
- **Walks**
- **Hits allowed**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter innings as a decimal of thirds: 6⅓ innings is 6.333.

### Inputs explained

FieldWhat to enterEarned runsA numberInnings pitchedA numberWalksA numberHits allowedA number

### What each result means

- **ERA** = 9×[Earned runs]÷[Innings pitched]
- **WHIP** = ([Walks] + [Hits allowed])÷[Innings pitched]

### Example values

How the main result changes when **Earned runs** changes and everything else stays at the example values above:

Earned runsERA311.5546.52.32623.0977.53.87934.641246.19

## Worked example

Inputs — Earned runs: 62; Innings pitched: 180.333; Walks: 50; Hits allowed: 160.

Results — **ERA = 3.09**; WHIP = 1.165.

## FAQ

**How do I enter partial innings?**
One out = 0.333, two outs = 0.667.

**What is a good ERA?**
Under 3.00 is excellent; around 4.00 is near average in MLB.

**What formula does the ERA Calculator use?**
ERA = 9 × earned runs ÷ innings pitched.