3/16 Inch to MM
Fractional inch to millimeters
3/16 inch (3/16″)
4.7625 mm
= 0.4762 cm · 1 inch = 25.4 mm exactly
💡 Commonly used for rivets, thin plate.
Nearby fractional inches
| Fraction | mm | cm |
|---|---|---|
| 1/16″ | 1.5875 mm | 0.1588 cm |
| 1/8″ | 3.175 mm | 0.3175 cm |
| 3/16″ | 4.7625 mm | 0.4762 cm |
| 1/4″ | 6.35 mm | 0.635 cm |
| 5/16″ | 7.9375 mm | 0.7937 cm |
Also written as
3/16 to mm · 3/16 in mm · 3/16" in mm · 3/16 inch in mm · 3/16 inches to millimeters · 3/16 en mm · 0.1875 inch to mm
All of these mean the same measurement. The double-prime mark (″) and the plain quote (") both stand for inches, and en mm is simply the French and Spanish wording of the same question.
Closest metric drill size
5 mm
3/16″ = 4.7625 mm · difference 0.2375 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.2375 mm gap is usually invisible in a clearance hole but changes the fit on a press fit or a tapped hole.
FAQ
How many mm is 3/16 inch?
3/16 inch equals 4.7625 mm. Since one inch is defined as exactly 25.4 mm, the result is 25.4 × 3 ÷ 16.
Why is the value exact?
The international yard and pound agreement of 1959 fixed the inch at exactly 25.4 mm, so fractional inch conversions terminate rather than repeat.