221 mm to AWG

221 mm = -28.36 AWG

mmAWG
206 mm-27.75
211 mm-27.96
216 mm-28.16
221-28.36
226 mm-28.55
231 mm-28.74
236 mm-28.92

221 mm = -28.36 AWG

Formula

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