eFG Calculator

Written by Great Medico

Updated September 25, 2026 •3 min read

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A basketball statistic becomes more meaningful when its inputs are visible beside the answer. eFG Calculator is designed for that kind of check: enter the underlying counts or measurements, calculate, and then interpret the result in context.

What this calculator does

The eFG Calculator uses Field goals made, 3-pointers made, and Field goal attempts. With the bundled default scenario, the primary result is shown as “Effective field-goal percentage” and the displayed value is 50 %. Supporting outputs include Made field goals, 3-pointers made, Equivalent FGM. The result is tied to the exact fields and branches exposed on this calculator; it does not invent extra match, athlete, weather, or equipment data.

How to use it

Use the calculator from left to right: choose any sport, method, activity, or equipment option first, then enter Field goals made, 3-pointers made, and Field goal attempts. Supported unit menus can be changed without rewriting the underlying scenario. When comparing two cases, change one variable at a time so you can tell which assumption actually moved the result.

How the calculation works

Under the hood, this calculator follows the method summarized in its definition: eFG% = (FGM + 0.5 × 3PM) ÷ FGA × 100. Inputs are validated first, supported units are converted to a consistent internal basis, and the calculation then applies the formula, table, or sport-specific rule for the chosen mode. The extra result metrics are there to make the main output easier to sanity-check.

Worked example

For a reproducible worked check, enter Field goals made = 30; 3-pointers made = 10; Field goal attempts = 70. The calculator returns 50 % for “Effective field-goal percentage”. The same run reports Made field goals = 30; 3-pointers made = 10. This default scenario is useful for confirming that the correct units, selectors, and sport-specific notation are active before substituting your own data.

How to interpret the result

For eFG Calculator, the primary output should be read in context. Treat the output as one lens on performance or physical requirements. Team role, pace, competition level, shot profile, fatigue, technique, and sample size can change what the same number means. A useful comparison keeps those conditions as similar as possible. If the result changes more than expected, recheck the denominator, units, selected mode, and whether all inputs describe the same scenario.

Limitations and practical notes

For eFG Calculator, keep this limitation in mind: This calculation does not model every possession, defender, fatigue effect, or biomechanics variable. Use it to organize the stated inputs, then combine the result with game film, coaching context, or measured jump/testing data where relevant.

For repeated use, record the date and the inputs alongside the eFG Calculator result. That is especially helpful when the number is being used to monitor progress or compare setups, because the calculation alone does not remember changes in conditions. Recalculate when the source data changes rather than carrying an old value forward.