Earned Run Average Calculator

Box-score notation: 5.1 is five and a third innings, 5.2 five and two-thirds.
Earned run average
3.00
Earned Run Average (ERA) Calculator
Innings pitched (decimal)
9.0000 innings
Outs recorded
27
WHIP (walks and hits per inning)
0.000
Hits per nine innings
0.00
Walks per nine innings
0.00
Strikeouts per nine innings
0.00
Summary
3 earned runs in 9 innings is an ERA of 3.00.
Worked out from Official Baseball Rules, Rule 9.17 (Earned Run Average) and Rule 9.16 (Earned Runs) and 1 other source.

How this is worked out

3 steps
  1. Innings pitched: 9 in box-score thirds is 9 innings (27 outs).
  2. ERA = 9 x 3 / 9 = 3, quoted as 3.00.
  3. No hit or walk totals given, so WHIP is zero.

Results are general information, not financial, tax, legal, medical or engineering advice.