What this calculator does
Effective field goal percentage (eFG%) works out basketball shooting efficiency that weights three-pointers as worth more. 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
FormulaeFG% = (field goals made + 0.5 × 3-point field goals made) ÷ field goal attempts
The inputs explained
| Field | What to enter |
|---|---|
| Field goals made | A number. Starts at 9. |
| 3-point field goals made | A number. Starts at 3. |
| Field goal attempts | A number. Starts at 18. |
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 field goals made
Every other input is held at the calculator’s starting values while field goals made varies. Select any row to load that scenario into the calculator.