OhMyCalc

Basketball Shooting Efficiency Calculator (TS% & eFG%)

Compute True Shooting percentage and effective Field Goal percentage from a player's points, field goal attempts and free throws.

How to Use the Basketball Shooting Efficiency Calculator (TS% & eFG%)

  1. Enter points, FGA and FTA from a box score.
  2. Enter FGM and 3PM to enable eFG%.
  3. Click Calculate.

使用场景

公式

TS% = points / (2 × (FGA + 0.44 × FTA)) × 100. eFG% = (FGM + 0.5 × 3PM) / FGA × 100.

常见问题

Why the 0.44 FTA coefficient?
Dean Oliver's derivation: of all free-throw trips, about 44% are the equivalent of a field-goal possession (and-ones, two-shot fouls, three-shot fouls share the weight).
TS% vs eFG%?
eFG% accounts for the extra value of a three-pointer but ignores free throws. TS% captures free throws as well and is the best single-shot efficiency metric.
What is a good TS%?
Roughly 54% is NBA league average. Elite scorers sit around 60%+; role players get by at 56–58%.