1miles/day = 67055.96379mm/h
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Millimeters per hour = Miles per day * 67055.96378978
Millimeters per hour = Miles per day * 67055.96378978
Millimeters per hour = 1 * 67055.96378978
Millimeters per hour = 67055.96379
Miles per day (mi/day) is a unit of speed and this unit is the number of miles travelled in one day.
Millimeters per hour (mm/h) is a unit of speed and this unit is the number of millimeters travelled in one hour.