17/32 Inch to MM

Fractional inch to millimeters

17/32 inch (17/32β€³)
13.49375 mm
= 1.349375 cm Β· 0.53125 inch decimal Β· 1 inch = 25.4 mm exactly
πŸ’‘ Common SAE socket, wrench and drill bit size β€” thirty-seconds are the usual step between sixteenth-inch sizes.
Also written as

17/32 to mm Β· 17/32 in mm Β· 17/32" in mm Β· 17/32 inch in mm Β· 17/32 inches to millimeters Β· 17/32 en mm Β· 0.53125 inch to mm

All of these mean the same measurement. The double-prime mark (β€³) 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
13 mm
17/32β€³ = 13.49375 mm Β· difference 0.4938 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.4938 mm gap is usually invisible in a clearance hole but changes the fit on a press fit or a tapped hole.
Nearby fractional inches
FractionmmcmDecimal
15/32β€³11.90625 mm1.190625 cm0.46875β€³
1/2β€³12.7 mm1.27 cm0.5β€³
17/32β€³13.49375 mm1.349375 cm0.53125β€³
9/16β€³14.2875 mm1.42875 cm0.5625β€³
19/32β€³15.08125 mm1.508125 cm0.59375β€³
17/32β€³ is 34/64 of an inch β€” the 34th mark from zero on a tape measure graduated in sixty-fourths.
FAQ
How many mm is 17/32 inch?
17/32 inch equals 13.49375 mm. One inch is defined as exactly 25.4 mm, so the result is 25.4 Γ— 17 Γ· 32.
What is 17/32 inch in decimal?
17/32 inch is 0.53125 inch in decimal, which is 13.49375 mm or 1.349375 cm.
Which metric size is closest to 17/32 inch?
13 mm is the closest common metric size, a difference of 0.4938 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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17/32 inch to mm

17/32 inch is 25.4 Γ— 17 Γ· 32 = 13.49375 mm, or 1.349375 cm. In decimal inches it is 0.53125β€³. Because the inch is defined as exactly 25.4 millimeters, fractional inch values convert without rounding.

Where this size shows up

Common SAE socket, wrench and drill bit size β€” thirty-seconds are the usual step between sixteenth-inch sizes.

Matching it to metric

The nearest metric drill size is 13 mm, a difference of 0.4938 mm. Whether that matters depends on the job: a clearance hole tolerates it, a press fit or a tapped hole does not. For hex fasteners the same logic applies to socket sizes β€” a socket even a few tenths oversize will round the corners of the head.

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