3/16 inch Drill Bit Size
A 3/16 inch drill bit is 0.1875 inches or 4.76 mm. It is slightly smaller than a 5 mm drill bit.
Quick Answer
Decimal
0.1875 in
Metric
4.76 mm
Closest
5 mm
3/16 inch Drill Bit Equivalent Chart
| Size | Decimal Inches | Metric | Note |
|---|---|---|---|
| 3/16 inch | 0.1875 in | 4.76 mm | Exact size |
| 5 mm | 0.1969 in | 5.00 mm | Common metric oversize |
| #12 | 0.1890 in | 4.80 mm | Nearby numbered drill size |
| 11/64 inch | 0.1719 in | 4.37 mm | Smaller fractional option |
Common Uses
Wall anchors, medium pilot holes, and general-purpose drilling.
Exact vs Nearest Size
Choose the exact bit for threads, tight hardware fits, dowels, and precision layouts. Use the nearest common equivalent only for rough pilot holes, clearance holes, or material removal where a slight difference is acceptable.
3/16 inch Drill Bit FAQ
What are the inch and metric dimensions for 3/16 inch?
3/16 inch drill bit measures 0.1875 in and 4.76 mm.
What is the closest common equivalent to 3/16 inch?
5 mm is the closest common equivalent listed here. It measures 0.1969 in or 5.00 mm.
Can I substitute another bit for 3/16 inch?
Use the exact bit size for tap drilling, precision holes, dowels, and manufacturer-specified hardware. A nearby fractional, metric, numbered, or letter drill bit is usually fine only for clearance holes or rough pilot holes.