11/64 Inch to MM
Fractional inch to millimeters
11/64 inch (11/64β³)
4.365625 mm
= 0.436562 cm Β· 0.171875 inch decimal Β· 1 inch = 25.4 mm exactly
π‘ Standard fractional drill bit size. 1/64 in is also the finest graduation printed on a US tape measure.
Also written as
11/64 to mm Β· 11/64 in mm Β· 11/64" in mm Β· 11/64 inch in mm Β· 11/64 inches to millimeters Β· 11/64 en mm Β· 0.171875 inch to mm
All of these mean the same measurement. The double-prime mark (β³) 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
4.5 mm
11/64β³ = 4.365625 mm Β· difference 0.1344 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.1344 mm gap is usually invisible in a clearance hole but changes the fit on a press fit or a tapped hole.
Nearby fractional inches
| Fraction | mm | cm | Decimal |
|---|---|---|---|
| 9/64β³ | 3.571875 mm | 0.357187 cm | 0.140625β³ |
| 5/32β³ | 3.96875 mm | 0.396875 cm | 0.15625β³ |
| 11/64β³ | 4.365625 mm | 0.436562 cm | 0.171875β³ |
| 3/16β³ | 4.7625 mm | 0.47625 cm | 0.1875β³ |
| 13/64β³ | 5.159375 mm | 0.515937 cm | 0.203125β³ |
11/64β³ is 11/64 of an inch β the 11th mark from zero on a tape measure graduated in sixty-fourths.
FAQ
How many mm is 11/64 inch?
11/64 inch equals 4.365625 mm. One inch is defined as exactly 25.4 mm, so the result is 25.4 Γ 11 Γ· 64.
What is 11/64 inch in decimal?
11/64 inch is 0.171875 inch in decimal, which is 4.365625 mm or 0.436562 cm.
Which metric size is closest to 11/64 inch?
4.5 mm is the closest common metric size, a difference of 0.1344 mm. Fractional-inch and metric fasteners are not interchangeable when the gap is more than about 0.2 mm.
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.
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