13/64 Inch to MM
Fractional inch to millimeters
13/64 inch (13/64β³)
5.159375 mm
= 0.515937 cm Β· 0.203125 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
13/64 to mm Β· 13/64 in mm Β· 13/64" in mm Β· 13/64 inch in mm Β· 13/64 inches to millimeters Β· 13/64 en mm Β· 0.203125 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
5 mm
13/64β³ = 5.159375 mm Β· difference 0.1594 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.1594 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 |
|---|---|---|---|
| 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 |
| 7/32β³ | 5.55625 mm | 0.555625 cm | 0.21875β³ |
| 15/64β³ | 5.953125 mm | 0.595313 cm | 0.234375β³ |
13/64β³ is 13/64 of an inch β the 13th mark from zero on a tape measure graduated in sixty-fourths.
FAQ
How many mm is 13/64 inch?
13/64 inch equals 5.159375 mm. One inch is defined as exactly 25.4 mm, so the result is 25.4 Γ 13 Γ· 64.
What is 13/64 inch in decimal?
13/64 inch is 0.203125 inch in decimal, which is 5.159375 mm or 0.515937 cm.
Which metric size is closest to 13/64 inch?
5 mm is the closest common metric size, a difference of 0.1594 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.
Advertisement (AdSense)