3/8 Inch to MM
Fractional inch to millimeters
3/8 inch (3/8β³)
9.525 mm
= 0.9525 cm Β· 1 inch = 25.4 mm exactly
π‘ Commonly used for AC lines, small pipe.
Nearby fractional inches
| Fraction | mm | cm |
|---|---|---|
| 1/4β³ | 6.35 mm | 0.635 cm |
| 5/16β³ | 7.9375 mm | 0.7937 cm |
| 3/8β³ | 9.525 mm | 0.9525 cm |
| 7/16β³ | 11.1125 mm | 1.1112 cm |
| 1/2β³ | 12.7 mm | 1.27 cm |
FAQ
How many mm is 3/8 inch?
3/8 inch equals 9.525 mm. Since one inch is defined as exactly 25.4 mm, the result is 25.4 Γ 3 Γ· 8.
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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