Metric conversion table.

Inches Millimeters (mm) 1 ⁄ 4 equals 6.4 3 ⁄ 8 equals 9.5 1 ⁄ 2 equals 12.7 9 ⁄ 16 equals 14.3 5 ⁄ 8 equals 15.9 3 ⁄ 4 equals 19.1 7 ⁄ 8 equals 22.2 1 equals 25.4 1 1 ⁄ 4 equals 31.8 1 1 ⁄ 2 equals 38.1 3 equals 76.2 3 2 ⁄ 16 equals 79.4 3 6 ⁄ 16 equals 85.7 3 8 ⁄ 16 equals 88.9 3 10 ⁄ 16 equals 92.1 3 13 ⁄ 16 equals 96.8 3 14 ⁄ 16 equals 98.4 3 15 ⁄ 16 equals 100.0 4 2 ⁄ 16 equals 104.8 4 5 ⁄ 16 equals 109.5 4 8 ⁄ 16 equals 114.3 4 12 ⁄ 16 equals 120.7 5 equals 127.0