Metric conversion table.

Inches Millimeters (mm) 1 ⁄ 4 equals 6.4 5 ⁄ 16 equals 7.9 3 ⁄ 8 equals 9.5 1 ⁄ 2 equals 12.7 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 2 3 ⁄ 16 equals 55.6 2 4 ⁄ 16 equals 57.2 2 7 ⁄ 16 equals 61.9 2 8 ⁄ 16 equals 63.5 2 9 ⁄ 16 equals 65.1 2 11 ⁄ 16 equals 68.3 2 12 ⁄ 16 equals 69.9 2 15 ⁄ 16 equals 74.6 3 1 ⁄ 16 equals 77.8 3 3 ⁄ 16 equals 81.0 3 5 ⁄ 16 equals 84.1 3 7 ⁄ 16 equals 87.3 3 9 ⁄ 16 equals 90.5 3 13 ⁄ 16 equals 96.8