3/16 inch in mm and decimal

3/16 in = 0.1875 in = 4.762 mm. Closest metric drill: 4.8 mm.

Nearby drill sizes

Drill	Type	Inch	mm	Difference
#16	number	.1770 in	4.496	-10.5 thou
#15	number	.1800 in	4.572	-7.5 thou
#14	number	.1820 in	4.623	-5.5 thou
#13	number	.1850 in	4.699	-2.5 thou
3/16	fraction	.1875 in	4.762	0.0 thou
#12	number	.1890 in	4.801	1.5 thou
#11	number	.1910 in	4.851	3.5 thou
#10	number	.1935 in	4.915	6.0 thou
#9	number	.1960 in	4.978	8.5 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.