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64 mm = 2.5197 in
Worked example
64 ÷ 25.4 = 2.5197 inches. On a ruler marked in sixteenths, that is about 2 1/2″; in thirty-seconds, 2 17/32″; in sixty-fourths, 2 33/64″. The nearest 1/16 mark (2 1/2″ = 63.5 mm) is off by 0.5 mm.
64 mm is also 6.4 cm and 0.21 feet.
| Millimeters | Inches | Nearest 1/16 |
|---|---|---|
| 59 mm | 2.3228 | 2 5/16″ |
| 60 mm | 2.3622 | 2 3/8″ |
| 61 mm | 2.4016 | 2 3/8″ |
| 62 mm | 2.4409 | 2 7/16″ |
| 63 mm | 2.4803 | 2 1/2″ |
| 64 mm | 2.5197 | 2 1/2″ |
| 65 mm | 2.5591 | 2 9/16″ |
| 66 mm | 2.5984 | 2 5/8″ |
| 67 mm | 2.6378 | 2 5/8″ |
| 68 mm | 2.6772 | 2 11/16″ |
| 69 mm | 2.7165 | 2 11/16″ |
Frequently asked questions
How many inches is 64 mm?
2.5197 inches, about 2 1/2″.
What fraction of an inch is 64 mm?
About 2 17/32″ to the nearest 1/32.