27/32 Inch to MM
Fractional inch to millimeters
27/32 inch (27/32β³)
21.43125 mm
= 2.143125 cm Β· 0.84375 inch decimal Β· 1 inch = 25.4 mm exactly
π‘ Common SAE socket, wrench and drill bit size β thirty-seconds are the usual step between sixteenth-inch sizes.
Also written as
27/32 to mm Β· 27/32 in mm Β· 27/32" in mm Β· 27/32 inch in mm Β· 27/32 inches to millimeters Β· 27/32 en mm Β· 0.84375 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
21 mm
27/32β³ = 21.43125 mm Β· difference 0.4312 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.4312 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 |
|---|---|---|---|
| 25/32β³ | 19.84375 mm | 1.984375 cm | 0.78125β³ |
| 13/16β³ | 20.6375 mm | 2.06375 cm | 0.8125β³ |
| 27/32β³ | 21.43125 mm | 2.143125 cm | 0.84375β³ |
| 7/8β³ | 22.225 mm | 2.2225 cm | 0.875β³ |
| 29/32β³ | 23.01875 mm | 2.301875 cm | 0.90625β³ |
27/32β³ is 54/64 of an inch β the 54th mark from zero on a tape measure graduated in sixty-fourths.
FAQ
How many mm is 27/32 inch?
27/32 inch equals 21.43125 mm. One inch is defined as exactly 25.4 mm, so the result is 25.4 Γ 27 Γ· 32.
What is 27/32 inch in decimal?
27/32 inch is 0.84375 inch in decimal, which is 21.43125 mm or 2.143125 cm.
Which metric size is closest to 27/32 inch?
21 mm is the closest common metric size, a difference of 0.4312 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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