27/32 inch in mm and decimal

27/32 in = 0.84375 in = 21.431 mm. Closest metric drill: 20 mm.

Nearby drill sizes

Drill	Type	Inch	mm	Difference
25/32	fraction	.7813 in	19.844	-62.5 thou
51/64	fraction	.7969 in	20.241	-46.9 thou
13/16	fraction	.8125 in	20.637	-31.3 thou
53/64	fraction	.8281 in	21.034	-15.6 thou
27/32	fraction	.8438 in	21.431	0.0 thou
55/64	fraction	.8594 in	21.828	15.6 thou
7/8	fraction	.8750 in	22.225	31.3 thou
57/64	fraction	.8906 in	22.622	46.9 thou
29/32	fraction	.9063 in	23.019	62.5 thou

1 thou = 0.001 in = 0.0254 mm. Drills a few thou apart are usually interchangeable for clearance holes, but not for tap drills or reamer pilots.