EFG Calculator - Effective Field Goal Percentage

An efg calculator turns a basketball box score into effective field goal percentage (eFG%), the shooting-efficiency metric that credits a made 3-point field goal for being worth one more point than a made 2-point field goal. Enter how many 2-pointers and 3-pointers a player or team made and attempted, and the tool returns eFG% alongside the simpler 2-point and 3-point field goal percentages, total field goals, and total points scored.

• • Single-game player check: Plug in a player's makes and attempts from a single box score to convert a long shooting line into one efficiency rate.
• • Season or multi-game totals: Add up makes and attempts across several games to evaluate how a player's eFG% moved across a stretch.
• • Team-level comparisons: Compare two teams or two lineups from the same league to see which group produced more value per field goal attempt.
• • Coaching and scouting reviews: Use eFG% during film review or recruiting to flag role players whose shot selection drives efficiency up or down.

Field goal percentage alone treats a layup and a deep three the same, even though the three is worth 50 percent more points. Effective field goal percentage fixes that gap by adding half of the made 3-pointers to the numerator before dividing by total attempts. Because the formula only needs four integers, an efg calculator works for NBA, college, high school, and practice stat sheets, putting a center who lives at the rim and a guard who fires from the arc on the same scale.

Once you have an eFG% line in hand, the Basketball PER Calculator adds a pace-adjusted overall rating so you can weigh shooting efficiency against a player's full offensive contribution.

The calculator applies the standard effective field goal percentage formula used by Basketball Reference. It takes the four box-score counts, sums them, and runs the classic form of the equation so you can double-check the result.

• FG: Total field goals made (2-pointers plus 3-pointers).
• 3P: Three-point field goals made.
• FGA: Total field goal attempts (2-point attempts plus 3-point attempts).

Substituting FG = 2FG + 3FG into the standard form gives (2FG + 3FG + 0.5 × 3FG) / FGA, which simplifies to the equivalent alternate form (2FG + 1.5 × 3FG) / FGA. Here 2FG counts the made 2-pointers and 3FG counts the made 3-pointers, with each made 3-pointer weighted at 1.5 to credit its extra point beyond a 2-pointer.

Total points from field goals is reported alongside eFG% so you can switch back and forth between a rate and the raw scoring total. Total points = 2 × 2-pointers made + 3 × 3-pointers made. Free throws are excluded because they are not field goal attempts.

According to Wikipedia, effective field goal percentage is calculated as (FG + 0.5 × 3P) / FGA, with the alternate form (2FG + 1.5 × 3FG) / FGA producing the same result when 2FG counts the made 2-pointers and 3FG counts the made 3-pointers.

According to Omni Calculator, the metric weights three-point field goals more heavily than two-point field goals by adding half of the made three-pointers to the total made field goals before dividing by total attempts.

If you also follow shot-quality models for other sports, the Soccer xG Calculator applies the same idea of weighting each chance by its expected value to soccer shots on goal.

Four ideas show up every time a coach, scout, or fan reads an eFG% line. Understanding them helps you decide when the rate is the right number to lean on.

Treat eFG% as a per-attempt value metric, not a scoring total. Two players can match at 55% eFG% while one scores more points simply by shooting more often, so the rate should always be read with attempts and points.

The metric also depends on consistent shot zones. If a stat sheet splits long twos and corner threes differently, the boundary between 2-point and 3-point attempts moves and the rate can shift slightly. Use the same shot-zone definitions whenever two players or teams are compared.

Baseball's OBP is the closest cousin of eFG% in another sport, and the On Base Percentage Calculator walks through the same idea of weighting every plate appearance by its run-scoring value.

The workflow is short: pull the four counts from the box score, enter them, and read the result panel. The steps below keep the process consistent whether you are working from a single game, a season log, or a scouting report.

1. 1 Pull the four counts: Find made 2-pointers, attempted 2-pointers, made 3-pointers, and attempted 3-pointers for the same player or team and the same window of games.
2. 2 Enter 2-point made and attempted: Type the made 2-pointers first and the attempted 2-pointers second. Layups, dunks, mid-range jump shots, and short hooks all count as 2-pointers.
3. 3 Enter 3-point made and attempted: Type the made 3-pointers and the attempted 3-pointers. Every shot from beyond the arc, including step-back threes, catch-and-shoot threes, and corner threes, belongs in this pair of fields.
4. 4 Read eFG% and zone splits: Confirm that makes never exceed attempts for either shot type, then read the eFG% line first and the 2-point and 3-point percentages next.
5. 5 Use total points for context: Check total points from field goals alongside eFG% when you want to know whether a high rate came from a small sample of shots or a heavy scoring workload.

For a player who went 12 of 22 from two and 4 of 9 from three, enter 12, 22, 4, and 9. The panel shows eFG% = 51.6%, 2-point FG% = 54.5%, 3-point FG% = 44.4%, total made = 16, total attempts = 31, total points = 36. Pair that with minutes played to see whether the rate held up.

When you want to compare a goalkeeper to a shooter on the same per-attempt value scale, the Save Percentage Calculator gives the soccer and hockey side of the same efficiency-rate family.

An efg calculator gives coaches, analysts, and fans a quick way to translate shot volume into a per-attempt value rate. The benefits below show up across game prep, scouting, and casual stat review.

• • Single-number shooting summary: Replace a long makes-and-attempts line with one rate that already weights threes correctly.
• • Cross-position comparisons: Compare a post player and a perimeter shooter on the same scale because eFG% reflects the value of every shot type.
• • Lineup and rotation decisions: Spot which lineups or rotations are creating efficient shot attempts and which ones are dragging the offense down.
• • Shot-quality tracking: Track how a player's shot selection evolves over a season by watching the gap between eFG% and raw field goal percentage.
• • Player-development feedback: Use eFG% during film sessions to show young players whether their shot choices are translating into efficient scoring.

Because eFG% is normalized by attempts, it travels well between contexts. A high school player, a college starter, and an NBA rotation player can be compared on the same axis when the shot-zone definitions are consistent. A small change in eFG% over a large number of attempts is usually a stronger signal than a large change from a tiny sample.

When free throws matter, pair the rate with true shooting percentage. eFG% rewards high-value field goal attempts, while true shooting percentage adds the free-throw contribution that eFG% ignores.

Pairing eFG% with the Slugging Percentage Calculator helps when you want to compare basketball and baseball hitting weights on the same extra-base-rate axis.

eFG% is reliable, but the result can move for reasons that have nothing to do with player skill. Knowing which factors matter keeps the rate from being over-interpreted.

• • The formula intentionally excludes free throws, so a high-volume free-throw shooter will look more efficient in true shooting percentage than in eFG% even when scoring output is identical.
• • eFG% does not separate assisted shots from isolation shots, so two players with the same rate can come from very different roles on the floor.

When a scouting report quotes eFG%, check the time window first. A 10-game rolling eFG% is more informative than a single-game line, especially for role players with fluctuating minutes. Corner threes are usually the most efficient three-point look in any system, so check whether the stat sheet separates them from above-the-break threes.

Comparing eFG% across leagues requires a baseline. As published in Basketball Reference's glossary, the metric is one of the standard adjustments used in NBA box scores, and the league-average eFG% shifts from season to season as rules and shot selection evolve.

According to Basketball Reference, effective field goal percentage adjusts field goal percentage to account for the fact that three-point field goals count for three points while other field goals count for two points

For a quick sanity check on the rate itself, the Percentage Calculator converts any decimal into a percentage using the same arithmetic that underpins the eFG% display.