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1 km/h = 0.6213711922 mph
Open in Unit ConverterFormula
mph = km/h ÷ 1.609344
How to convert
To convert kilometers per hour to miles per hour, divide the value by 1.609344. For example, 5 km/h = 3.106855961 mph.
Conversion table
| km/h | mph |
|---|---|
| 5 km/h | 3.106855961 mph |
| 10 km/h | 6.213711922 mph |
| 20 km/h | 12.42742384 mph |
| 30 km/h | 18.64113577 mph |
| 40 km/h | 24.85484769 mph |
| 50 km/h | 31.06855961 mph |
| 60 km/h | 37.28227153 mph |
| 80 km/h | 49.70969538 mph |
| 90 km/h | 55.9234073 mph |
| 100 km/h | 62.13711922 mph |
| 120 km/h | 74.56454307 mph |
| 130 km/h | 80.77825499 mph |
| 200 km/h | 124.2742384 mph |
About these units
Road speeds are given in kilometers per hour in most countries and in miles per hour in the US and the UK. 1 mph is exactly 1.609344 km/h, because a mile is 1,609.344 m. Science and engineering use meters per second (1 m/s = 3.6 km/h), and ships and aircraft use knots: one nautical mile (1,852 m) per hour, about 1.852 km/h or 1.151 mph.
FAQ
› How do I convert km/h to mph?
1 km/h = 0.6213711922 mph. To convert, divide the value by 1.609344: 5 km/h = 3.106855961 mph.
› What is 1 mph in km/h?
1 mph = 1.609344 km/h. The reverse formula is km/h = mph × 1.609344.
› How do I convert km/h to m/s quickly?
Divide by 3.6. For example, 90 km/h is 25 m/s; to go back, multiply m/s by 3.6.
› Why do ships and planes use knots?
A nautical mile matches one minute of latitude, so speeds in knots fit naturally with navigation charts.