Staple Conversion Chart

category	inches	32nds	decimals	USDA Upland HVI length	USDA Am Pima HVI length	mm
short	13/16″	26	0.8125	0.80-0.85		20.64
	27/32″	27	0.84375			21.43
	7/ 8″	28	0.875	0.86-0.89		22.23
	29/32″	29	0.90625	0.90-0.92		23.02
	15/16″	30	0.9375	0.93-0.95		23.81
medium	31/32″	31	0.96875	0.96-0.98		24.61
	1″	32	1.0	0.99-1.01		25.40
	1. 1/32″	33	1.03125	1.02-1.04		26.19
	1. 1/16″	34	1.0625	1.05-1.07		26.99
	1. 3/32″	35	1.09375	1.08-1.10		27.78
	1. 1/ 8″	36	1.125	1.11-1.13		28.58
medium	1. 5/32″	37	1.15625	1.14-1.17		29.37
to long	1. 3/16″	38	1.1875	1.18-1.20		30.16
	1. 7/32″	39	1.21875	1.21-1.23		30.96
long	1. 1/ 4″	40	1.25	1.24-1.26	-1.20	31.75
	1. 9/32″	41	1.28125	1.27-1.29		32.54
	1. 5/16″	42	1.3125	1.30-1.32	1.21-1.25	33.34
	1.11/32″	43	1.34375	1.33-1.35		34.13
	1. 3/ 8″	44	1.375	1.36	1.26-1.31	34.93
	1.13/32″	45	1.40625			35.72
extra	1. 7/16″	46	1.4375		1.32-1.36	36.51
long	1.15/32″	47	1.46875			37.31
	1. 1/ 2″	48	1.5		1.37-1.42	38.10
	1.17/32″	49	1.53125			38.89
	1. 9/16″	50	1.5625		1.43-1.47	39.69
	1.19/32″	51	1.59375			40.48
	1. 5/ 8″	52	1.625		1.48	41.28
	1.21/32″	53	1.65625			42.07
	1.11/16″	54	1.6875			42.86
	1.23/32″	55	1.71875			43.66
	1. 3/ 4″	56	1.75			44.45