25/32 Inch to MM
Fractional inch to millimeters
25/32 inch (25/32β³)
19.84375 mm
= 1.984375 cm Β· 0.78125 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
25/32 to mm Β· 25/32 in mm Β· 25/32" in mm Β· 25/32 inch in mm Β· 25/32 inches to millimeters Β· 25/32 en mm Β· 0.78125 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
20 mm
25/32β³ = 19.84375 mm Β· difference 0.1562 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.1562 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 |
|---|---|---|---|
| 23/32β³ | 18.25625 mm | 1.825625 cm | 0.71875β³ |
| 3/4β³ | 19.05 mm | 1.905 cm | 0.75β³ |
| 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 |
25/32β³ is 50/64 of an inch β the 50th mark from zero on a tape measure graduated in sixty-fourths.
FAQ
How many mm is 25/32 inch?
25/32 inch equals 19.84375 mm. One inch is defined as exactly 25.4 mm, so the result is 25.4 Γ 25 Γ· 32.
What is 25/32 inch in decimal?
25/32 inch is 0.78125 inch in decimal, which is 19.84375 mm or 1.984375 cm.
Which metric size is closest to 25/32 inch?
20 mm is the closest common metric size, a difference of 0.1562 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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