7 CFR § 51.322 - Metric conversion table.

Inches	Millimeters (mm)
1/16 equals	1.6
1/8 equals	3.2
3/16 equals	4.8
1/4 equals	6.4
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 1/8 equals	28.6
2 1/8 equals	54.0
2 1/4 equals	57.2
2 3/8 equals	60.3
2 1/2 equals	63.5
2 3/4 equals	69.9

Cubic Inches	Cubic Centimeters (cc)
2100 equals	34,412.7
2900 equals	47,522.3

Pounds	Grams (g)
10 equals	4,536.0
37 equals	16,783.2
40 equals	18,144.0