216.5 mm to AWG

216.5 mm = -28.18 AWG

mmAWG
201.5 mm-27.56
206.5 mm-27.77
211.5 mm-27.98
216.5-28.18
221.5 mm-28.38
226.5 mm-28.57
231.5 mm-28.76

216.5 mm = -28.18 AWG

Formula

d(mm) = 0.127 × 92^((36 − AWG) / 39) — the American Wire Gauge geometric progression