Staple Conversion Chart

categoryinches32ndsdecimalsUSDA Upland   HVI lengthUSDA Am Pima
HVI length
mm
short13/16″260.81250.80-0.8520.64
27/32″270.8437521.43
7/ 8″280.8750.86-0.8922.23
29/32″290.906250.90-0.9223.02
15/16″300.93750.93-0.9523.81
medium31/32″310.968750.96-0.9824.61
1″321.00.99-1.0125.40
1. 1/32″331.031251.02-1.0426.19
1. 1/16″341.06251.05-1.0726.99
1. 3/32″351.093751.08-1.1027.78
1. 1/ 8″361.1251.11-1.1328.58
medium1. 5/32″371.156251.14-1.1729.37
to long1. 3/16″381.18751.18-1.2030.16
1. 7/32″391.218751.21-1.2330.96
long1.  1/ 4″401.251.24-1.26-1.2031.75
1. 9/32″411.281251.27-1.2932.54
1. 5/16″421.31251.30-1.321.21-1.2533.34
1.11/32″431.343751.33-1.3534.13
1.  3/ 8″441.3751.361.26-1.3134.93
1.13/32″451.4062535.72
extra1. 7/16″461.43751.32-1.3636.51
long1.15/32″471.4687537.31
1.  1/ 2″481.51.37-1.4238.10
1.17/32″491.5312538.89
1. 9/16″501.56251.43-1.4739.69
1.19/32″511.5937540.48
1.  5/ 8″521.6251.4841.28
1.21/32″531.6562542.07
1.11/16″541.687542.86
1.23/32″551.7187543.66
1.  3/ 4″561.7544.45