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Effective Field Goal Percentage Calculator - Basketball

eFG Formula

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1. What is an Effective Field Goal Percentage Calculator?

Definition: This calculator computes several basketball shooting statistics, including Total Field Goals Scored, Total Field Goal Attempts, 2-Point Field Goal Percentage, 3-Point Field Goal Percentage, Effective Field Goal Percentage (eFG%), and Points Scored by the Player. eFG% adjusts a player’s field goal percentage to account for the fact that 3-point field goals are worth more than 2-point field goals.

Purpose: It helps evaluate a player’s shooting efficiency and overall scoring contribution, aiding coaches, players, and fans in assessing offensive performance.

2. How Does the Calculator Work?

The calculator uses the following formulas:

Total Field Goals Scored:

\( \text{Total Field Goals Scored} = \text{FG2} + \text{FG3} \)

Total Field Goal Attempts:

\( \text{Total Field Goal Attempts} = \text{FGA2} + \text{FGA3} \)

2-Point Field Goal Percentage:

\( \text{2-Point FG%} = \frac{\text{FG2}}{\text{FGA2}} \times 100 \)

3-Point Field Goal Percentage:

\( \text{3-Point FG%} = \frac{\text{FG3}}{\text{FGA3}} \times 100 \)

Effective Field Goal Percentage (eFG%):

\( \text{eFG%} = \frac{\text{FG2} + 1.5 \times \text{FG3}}{\text{FGA2} + \text{FGA3}} \times 100 \)

Points Scored:

\( \text{Points Scored} = (\text{FG2} \times 2) + (\text{FG3} \times 3) \)

Where:

  • FG2: Number of 2-point field goals made.
  • FG3: Number of 3-point field goals made.
  • FGA2: Number of 2-point field goal attempts.
  • FGA3: Number of 3-point field goal attempts.

Steps:

  • Enter the number of 2-Point Field Goals Made (FG2), 3-Point Field Goals Made (FG3), 2-Point Field Goal Attempts (FGA2), and 3-Point Field Goal Attempts (FGA3).
  • Validate inputs to ensure they are non-negative and logical (e.g., FG2 ≤ FGA2).
  • Compute each metric using the formulas above.
  • Display the results with appropriate precision (percentages to 3 decimal places).

3. Importance of eFG% and Related Calculations

Calculating these metrics is crucial for:

  • Performance Assessment: eFG% provides a more accurate measure of shooting efficiency by accounting for the added value of 3-point shots, while other metrics like 2-Point and 3-Point FG% offer detailed insights into shooting accuracy.
  • Team Strategy: Helps coaches evaluate players’ scoring efficiency and build strategies that emphasize efficient shot selection.
  • Fan Engagement: Allows fans to compare players’ shooting effectiveness and overall scoring contribution beyond traditional field goal percentage.

4. Using the Calculator

Example 1: A player makes 40 2-point field goals on 80 attempts and 20 3-point field goals on 50 attempts:

  • 2-Point Field Goals Made (FG2): 40
  • 2-Point Field Goal Attempts (FGA2): 80
  • 3-Point Field Goals Made (FG3): 20
  • 3-Point Field Goal Attempts (FGA3): 50
  • Total Field Goals Scored: \( 40 + 20 = 60 \)
  • Total Field Goal Attempts: \( 80 + 50 = 130 \)
  • 2-Point FG%: \( \frac{40}{80} \times 100 = 50.000\% \)
  • 3-Point FG%: \( \frac{20}{50} \times 100 = 40.000\% \)
  • eFG%: \( \frac{40 + 1.5 \times 20}{130} \times 100 = \frac{40 + 30}{130} \times 100 = 53.846\% \)
  • Points Scored: \( (40 \times 2) + (20 \times 3) = 80 + 60 = 140 \)
  • Results: Total Field Goals Scored = 60, Total Field Goal Attempts = 130, 2-Point FG% = 50.000%, 3-Point FG% = 40.000%, eFG% = 53.846%, Points Scored = 140

Example 2: A player makes 30 2-point field goals on 60 attempts and 10 3-point field goals on 30 attempts:

  • 2-Point Field Goals Made (FG2): 30
  • 2-Point Field Goal Attempts (FGA2): 60
  • 3-Point Field Goals Made (FG3): 10
  • 3-Point Field Goal Attempts (FGA3): 30
  • Total Field Goals Scored: \( 30 + 10 = 40 \)
  • Total Field Goal Attempts: \( 60 + 30 = 90 \)
  • 2-Point FG%: \( \frac{30}{60} \times 100 = 50.000\% \)
  • 3-Point FG%: \( \frac{10}{30} \times 100 = 33.333\% \)
  • eFG%: \( \frac{30 + 1.5 \times 10}{90} \times 100 = \frac{30 + 15}{90} \times 100 = 50.000\% \)
  • Points Scored: \( (30 \times 2) + (10 \times 3) = 60 + 30 = 90 \)
  • Results: Total Field Goals Scored = 40, Total Field Goal Attempts = 90, 2-Point FG% = 50.000%, 3-Point FG% = 33.333%, eFG% = 50.000%, Points Scored = 90

5. Frequently Asked Questions (FAQ)

Q: What is eFG% in basketball?
A: Effective Field Goal Percentage (eFG%) adjusts a player’s field goal percentage to account for the fact that 3-point field goals are worth more than 2-point field goals, giving extra weight to 3-pointers.

Q: Why is eFG% better than regular FG%?
A: eFG% provides a more accurate measure of shooting efficiency by factoring in the higher value of 3-point shots, which regular FG% does not.

Q: What is a good eFG%?
A: In the NBA, an eFG% above 50.000% is considered good, while above 55.000% is excellent, depending on the player’s role and era.

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