13/16 Inch to MM
Fractional inch to millimeters
13/16 inch (13/16β³)
20.6375 mm
= 2.0637 cm Β· 1 inch = 25.4 mm exactly
π‘ Commonly used for spark plug sockets, hex bolt heads.
Nearby fractional inches
| Fraction | mm | cm |
|---|---|---|
| 11/16β³ | 17.4625 mm | 1.7462 cm |
| 3/4β³ | 19.05 mm | 1.905 cm |
| 13/16β³ | 20.6375 mm | 2.0637 cm |
| 7/8β³ | 22.225 mm | 2.2225 cm |
| 15/16β³ | 23.8125 mm | 2.3813 cm |
Also written as
13/16 to mm Β· 13/16 in mm Β· 13/16" in mm Β· 13/16 inch in mm Β· 13/16 inches to millimeters Β· 13/16 en mm Β· 0.8125 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
13/16β³ = 20.6375 mm Β· difference 0.3625 mm
Metric drills step in 0.5 mm, so a fractional inch size rarely lands exactly on one. A 0.3625 mm gap is usually invisible in a clearance hole but changes the fit on a press fit or a tapped hole.
FAQ
How many mm is 13/16 inch?
13/16 inch equals 20.6375 mm. Since one inch is defined as exactly 25.4 mm, the result is 25.4 Γ 13 Γ· 16.
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)