ERA Calculator for High School and Youth Baseball (WHIP Too)
- By Julien Levadoux
ERA is earned runs × innings in a game ÷ innings pitched. High school games are 7 innings, so a high school ERA uses 7; Little League Majors use 6, and college and the majors use 9. WHIP is walks plus hits ÷ innings pitched.
How ERA works
Earned run average is how many earned runs a pitcher would give up over a full game at their current rate:
ERA = earned runs × innings in a game ÷ innings pitched
The “innings in a game” part matters more than most stat sites admit. The same pitcher looks very different depending on the game length you divide by:
| Earned runs | Innings pitched | Over 9 innings | Over 7 innings | Over 6 innings |
|---|---|---|---|---|
| 10 | 35 | 2.57 | 2.00 | 1.71 |
| 6 | 20 | 2.70 | 2.10 | 1.80 |
So compare high school ERAs with other high school ERAs, worked out on 7 innings. A 2.00 on 7 innings is the same pitching as a 2.57 on 9.
Innings the scorebook way
Innings pitched count outs: each out is a third of an inning. Scorebooks write them with a dot:
- 5.1 = 5 innings and 1 out = 5⅓ innings
- 5.2 = 5 innings and 2 outs = 5⅔ innings
- 6.0 = 6 full innings
So 5.2 is not 5.2 innings. That’s the most common mistake when people work out ERA by hand. The calculator reads the dot the scorebook way.
Earned or unearned?
Only earned runs count. A run is unearned when it scores because of a fielding error or a passed ball, or when it would not have scored without one. The official scorer decides; in youth leagues there may be no scorer at all, and many teams simply count every run. If that’s your team, the number is really a “runs allowed average”: fine for tracking, but not a true ERA.
WHIP
WHIP (walks plus hits per inning pitched) counts base runners instead of runs:
WHIP = (walks + hits) ÷ innings pitched
It doesn’t depend on game length, so it compares the same way at every level. Hit batters and runners who reach on errors don’t count.