Per Dart Calculator — calculate per dart for training and performance. Evidence-based formula and benchmarks.
The NFL passer rating uses four components (each capped between 0 and 2.375):
a = (Comp% − 30) / 20 | b = (YPA − 3) / 4 | c = TD% × 20 / 5 | d = 2.375 − (INT% × 25)
Passer Rating = ((a + b + c + d) / 6) × 100
Maximum rating: 158.3 (perfect: 77.5% comp, 12.5+ YPA, 11.875% TD rate, 0% INT rate)