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ERA Calculator

Earned Run Average — the standard measure of a pitcher's effectiveness. Quick single-game calc or full season tracker.

ERA  =  Earned RunsInnings Pitched  ×  9
Only earned runs count — unearned runs (errors) are excluded
Use .1 = 1 out, .2 = 2 outs (e.g. 6.1 = 6⅓ innings)

ERA Rating Scale (MLB Reference)

Under 2.00 Elite / Ace
2.00 – 3.00 Excellent
3.00 – 4.00 Good / Above Avg
4.00 – 5.00 Average
5.00 – 6.00 Below Average
6.00+ Poor
Earned Run Average Calculator – ERA Tool