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Baseball Game Score Calculator.

Calculate the standard Bill James pitching Game Score from a box score.

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Outs recorded

Strikeouts

Hits allowed

Earned runs

Unearned runs

Walks

Game score

0.000000

Results update automatically as you type.

Use Cases

Evaluate a starting pitcher's performance

Use the Game Score to quickly assess how dominant or ineffective a starting pitcher was in a single game, beyond just ERA or win/loss.

Example: A pitcher with 18 outs, 8 K's, 5 hits, 2 ER, 0 unearned, 2 walks gets a score of 50 + 36 + 8 - 10 - 8 - 0 - 2 = 74.

Compare historical pitching performances

Calculate Game Scores for past games to compare great pitching performances across eras, using the same standard metric.

Example: Compare a 20-strikeout game vs. a 1-hit shutout to see which scores higher.

Frequently Asked Questions

What is the Bill James Game Score formula?: The formula is: Game Score = 50 + (outs recorded * 2) + strikeouts - (hits allowed * 2) - (earned runs * 4) - (unearned runs * 2) - walks. This calculator uses that standard formula.
How do I convert innings pitched to outs recorded?: Each out counts as one. For example, 6 innings pitched equals 18 outs (6 * 3). If a pitcher records 5.2 innings, that's 17 outs (5*3 + 2). Enter the total number of outs, not innings.
What is a good Game Score?: A score of 50 is average. Scores above 60 are strong, and above 70 are excellent. A perfect game would score 114 (50 + 54 outs + 10 strikeouts, assuming 10 K's).

Tips & Common Mistakes

Tips

Ensure you enter the total outs, not innings. For example, 7.1 innings = 22 outs (7*3 + 1).
Strikeouts are a positive factor, so don't forget to include them; they can significantly boost the score.
Earned runs are weighted more heavily (4 points each) than unearned runs (2 points each), so be careful to classify runs correctly.
Use the score as a quick reference; it doesn't account for ballpark, defense, or game context.

Common Mistakes to Avoid

Entering innings pitched instead of outs. Always multiply innings by 3 and add any extra outs.
Confusing earned runs with unearned runs. Earned runs are those not resulting from errors or passed balls.
Forgetting to include walks, which subtract 1 point each and can lower the score significantly.

Last updated: August 13, 2026

Use Cases

Evaluate a starting pitcher's performance

Use the Game Score to quickly assess how dominant or ineffective a starting pitcher was in a single game, beyond just ERA or win/loss.

Example: A pitcher with 18 outs, 8 K's, 5 hits, 2 ER, 0 unearned, 2 walks gets a score of 50 + 36 + 8 - 10 - 8 - 0 - 2 = 74.

Compare historical pitching performances

Calculate Game Scores for past games to compare great pitching performances across eras, using the same standard metric.

Example: Compare a 20-strikeout game vs. a 1-hit shutout to see which scores higher.

Frequently Asked Questions

What is the Bill James Game Score formula?

The formula is: Game Score = 50 + (outs recorded * 2) + strikeouts - (hits allowed * 2) - (earned runs * 4) - (unearned runs * 2) - walks. This calculator uses that standard formula.

How do I convert innings pitched to outs recorded?

Each out counts as one. For example, 6 innings pitched equals 18 outs (6 * 3). If a pitcher records 5.2 innings, that's 17 outs (5*3 + 2). Enter the total number of outs, not innings.

What is a good Game Score?

A score of 50 is average. Scores above 60 are strong, and above 70 are excellent. A perfect game would score 114 (50 + 54 outs + 10 strikeouts, assuming 10 K's).

Tips & Common Mistakes

Tips

Ensure you enter the total outs, not innings. For example, 7.1 innings = 22 outs (7*3 + 1).
Strikeouts are a positive factor, so don't forget to include them; they can significantly boost the score.
Earned runs are weighted more heavily (4 points each) than unearned runs (2 points each), so be careful to classify runs correctly.
Use the score as a quick reference; it doesn't account for ballpark, defense, or game context.

Common Mistakes to Avoid

Entering innings pitched instead of outs. Always multiply innings by 3 and add any extra outs.
Confusing earned runs with unearned runs. Earned runs are those not resulting from errors or passed balls.
Forgetting to include walks, which subtract 1 point each and can lower the score significantly.

Use Cases

Evaluate a starting pitcher's performance

Use the Game Score to quickly assess how dominant or ineffective a starting pitcher was in a single game, beyond just ERA or win/loss.

Example: A pitcher with 18 outs, 8 K's, 5 hits, 2 ER, 0 unearned, 2 walks gets a score of 50 + 36 + 8 - 10 - 8 - 0 - 2 = 74.

Compare historical pitching performances

Calculate Game Scores for past games to compare great pitching performances across eras, using the same standard metric.

Example: Compare a 20-strikeout game vs. a 1-hit shutout to see which scores higher.

Frequently Asked Questions

What is the Bill James Game Score formula?

The formula is: Game Score = 50 + (outs recorded * 2) + strikeouts - (hits allowed * 2) - (earned runs * 4) - (unearned runs * 2) - walks. This calculator uses that standard formula.

How do I convert innings pitched to outs recorded?

Each out counts as one. For example, 6 innings pitched equals 18 outs (6 * 3). If a pitcher records 5.2 innings, that's 17 outs (5*3 + 2). Enter the total number of outs, not innings.

What is a good Game Score?

A score of 50 is average. Scores above 60 are strong, and above 70 are excellent. A perfect game would score 114 (50 + 54 outs + 10 strikeouts, assuming 10 K's).

Tips & Common Mistakes

Tips

Ensure you enter the total outs, not innings. For example, 7.1 innings = 22 outs (7*3 + 1).
Strikeouts are a positive factor, so don't forget to include them; they can significantly boost the score.
Earned runs are weighted more heavily (4 points each) than unearned runs (2 points each), so be careful to classify runs correctly.
Use the score as a quick reference; it doesn't account for ballpark, defense, or game context.

Common Mistakes to Avoid

Entering innings pitched instead of outs. Always multiply innings by 3 and add any extra outs.
Confusing earned runs with unearned runs. Earned runs are those not resulting from errors or passed balls.
Forgetting to include walks, which subtract 1 point each and can lower the score significantly.