45/64 inch in mm and decimal

45/64 in = 0.703125 in = 17.859 mm. Closest metric drill: 18 mm.

Nearby drill sizes

Drill	Type	Inch	mm	Difference
41/64	fraction	.6406 in	16.272	-62.5 thou
21/32	fraction	.6563 in	16.669	-46.9 thou
43/64	fraction	.6719 in	17.066	-31.3 thou
11/16	fraction	.6875 in	17.462	-15.6 thou
45/64	fraction	.7031 in	17.859	0.0 thou
23/32	fraction	.7188 in	18.256	15.6 thou
47/64	fraction	.7344 in	18.653	31.3 thou
3/4	fraction	.7500 in	19.050	46.9 thou
49/64	fraction	.7656 in	19.447	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.