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Baseball ERA Calculator

Earned run average from earned runs and innings pitched.

Compute a pitcher's earned run average (ERA) — earned runs allowed per nine innings pitched.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

ERA = 9 × earned runs / innings pitched

In depth

Compute a pitcher's earned run average (ERA) — earned runs allowed per nine innings pitched.