Speedy Calculator

ERA Calculator (Earned Run Average)

Sports Updated October 25, 2026

Quick answer

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.

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

How to use the ERA Calculator

  1. Earned runs
  2. Innings pitched
  3. Walks
  4. 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

Field What to enter
Earned runs A number
Innings pitched A number
Walks A number
Hits allowed A 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 runs ERA
31 1.55
46.5 2.32
62 3.09
77.5 3.87
93 4.64
124 6.19

Formula

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

Worked example

Inputs — Earned runs: 62; Innings pitched: 180.333; Walks: 50; Hits allowed: 160.
Results — ERA = 3.09; WHIP = 1.165.

Frequently asked questions

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.

Cite this calculator

Speedy Calculator. (2026). ERA Calculator (Earned Run Average). Speedy Calculator. https://speedycalculator.com/calculators/sports/era/