Metric conversion table.

Inches Millimeters (mm) 1 ⁄ 8 equals 3.2 1 ⁄ 4 equals 6.4 1 ⁄ 2 equals 12.7 3 ⁄ 4 equals 19.1 1 equals 25.4 1 1 ⁄ 2 equals 38.1 2 equals 50.8 2 1 ⁄ 2 equals 63.5 3 equals 76.2 3 1 ⁄ 2 equals 88.9 4 equals 101.6 4 1 ⁄ 2 equals 114.3 Ounces Grams 1 equals 28.35 4 equals 113.40 5 equals 141.75 6 equals 170.10 7 equals 198.45 8 equals 226.80 9 equals 255.15 10 equals 283.50 12 equals 340.20 14 equals 396.90 16 equals 453.60 18 equals 510.30 19 equals 538.60 20 equals 567.00