Question: are the numbers on the treadmill mph?
Answer: If your treadmill is set to English miles, a 10 on the speed screen represents 10 mph, which is 16.1 kph. If your treadmill is set to metric kilometers, a 10 in the speed screen represents 10 kph, which is 6.2 mph. Treadmills usually allow you to adjust the speed in 0.1 increments.