What this calculator does
NBA game score works out john Hollinger’s single-game performance rating from a box score line. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaGmSc = PTS + 0.4×FG − 0.7×FGA − 0.4×(FTA−FT) + 0.7×ORB + 0.3×DRB + STL + 0.7×AST + 0.7×BLK − 0.4×PF − TOV
The inputs explained
| Field | What to enter |
|---|---|
| Points | A number. Starts at 24. |
| Field goals made | A number. Starts at 9. |
| Field goals attempted | A number. Starts at 18. |
| Free throws made | A number. Starts at 4. |
| Free throws attempted | A number. Starts at 5. |
| Offensive rebounds | A number. Starts at 1. |
| Defensive rebounds | A number. Starts at 5. |
| Steals | A number. Starts at 2. |
| Assists | A number. Starts at 6. |
| Blocks | A number. Starts at 1. |
| Personal fouls | A number. Starts at 2. |
| Turnovers | A number. Starts at 3. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with points
Every other input is held at the calculator’s starting values while points varies. Select any row to load that scenario into the calculator.
How the answer changes with points
| Points | Game score | Rough guide | Reference |
|---|---|---|---|
| 12 | 7.9 | ~10 average game, ~20 great game, ~40 historic performance | John Hollinger’s GmSc formula (ESPN) |
| 18 | 13.9 | ~10 average game, ~20 great game, ~40 historic performance | John Hollinger’s GmSc formula (ESPN) |
| 24 | 19.9 | ~10 average game, ~20 great game, ~40 historic performance | John Hollinger’s GmSc formula (ESPN) |
| 36 | 31.9 | ~10 average game, ~20 great game, ~40 historic performance | John Hollinger’s GmSc formula (ESPN) |
| 48 | 43.9 | ~10 average game, ~20 great game, ~40 historic performance | John Hollinger’s GmSc formula (ESPN) |
| 72 | 67.9 | ~10 average game, ~20 great game, ~40 historic performance | John Hollinger’s GmSc formula (ESPN) |