- 1). Use the speedometer to find your kilometers per hour. For example, assume it reads 80 kilometers per hour.
- 2). Determine the conversion factor. The conversion factor for kilometers per hour to miles per hour is 0.621371192237334.
- 3). Multiply your kilometers per hour by the conversion factor. In the example, 80 kilometers per hour times 0.621371192237334 equals about 49.71 miles per hour.
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