Speed Converter
Convert between miles per hour, kilometers per hour (kmph, kph), meters per second, knots, feet per second and running pace (minutes per kilometer or per mile). Speed units share the length factors, so 1 mph is exactly 1.609344 km/h. The search phrase mile to kmph almost always means this mph to km/h conversion.
1 miles per hour = 1.609344 kilometers per hour. Formula: km/h = mph × 1.609344 (or mph ÷ 0.62137119)
1 miles per hour in all speed units
| Kilometers per hour (km/h) | 1.609344 |
| Meters per second (m/s) | 0.44704 |
| Knots (kn) | 0.86897624 |
| Feet per second (ft/s) | 1.4666667 |
| Min/km (min/km) | 37.282272 |
| Min/mi (min/mi) | 60 |
Speed units on this page
| Unit | Symbol | 1 unit equals |
|---|---|---|
| Kilometers per hour | km/h | 0.27777778 m/s |
| Miles per hour | mph | 0.44704 m/s |
| Meters per second | m/s | 1 m/s |
| Knot | kn | 0.51444444 m/s |
| Feet per second | ft/s | 0.3048 m/s |
| Minutes per km (pace) | min/km | 16.666667 ÷ value, in m/s |
| Minutes per mile (pace) | min/mi | 26.8224 ÷ value, in m/s |
To convert, the value is first expressed in the base unit and then divided by the factor of the target unit, so any pair of units on this page can be converted in one step.
Common speed conversions
| From | To |
|---|---|
| 1 miles per hour | 1.609344 km/h |
| 1 kilometers per hour | 0.62137119 mph |
| 1 meters per second | 3.6 km/h |
| 1 knot | 1.852 km/h |
| 60 miles per hour | 96.56064 km/h |
| 100 kilometers per hour | 62.137119 mph |
| 6 min/km | 10 km/h |
| 1 kilometers per hour | 0.27777778 m/s |
Speed limits, running pace and wind
Road signs: 30 mph is 48 km/h, 50 mph is 80 km/h, 70 mph is 113 km/h, and 100 km/h is 62 mph. Running: pace is the inverse of speed, so a 6:00 min/km pace is 10 km/h and a 8:00 min/mile pace is 7.5 mph, which the converter handles directly. Wind and boats: the knot is one nautical mile per hour, 1.852 km/h or 1.151 mph, and weather forecasts often mix knots, mph and km/h.
Frequently asked questions
How do I convert mph to km/h?
Multiply by 1.609344. 60 mph is 96.56 km/h. For a quick estimate, multiply by 1.6 or add 60%. The mph to km/h page has a table.
What is 100 km/h in mph?
62.137 mph. Multiply km/h by 0.621371 to get mph, or divide by 1.6 for a rough answer.
How fast is a knot?
One nautical mile per hour: 1.852 km/h, 1.1508 mph or 0.5144 m/s. 20 knots is about 37 km/h or 23 mph.
How do I convert running pace to speed?
Speed = 60 ÷ pace. A pace of 5 min/km is 60 ÷ 5 = 12 km/h. Pick minutes per km or minutes per mile as the from unit above and enter the pace as a decimal (5:30 is 5.5).
Related calculators
- Miles per hour to Kilometers per hour Converter1 miles per hour = 1.609344 kilometers per hour, with a table.
- Kilometers per hour to Miles per hour Converter1 kilometers per hour = 0.62137119 miles per hour, with a table.
- Length Convertermm, cm, m, km, inches, feet, yards, miles and gaj.
- Time ConverterSeconds, minutes, hours, days, weeks, months and years.
Last updated . Formulas are shown on the page and checked against the worked example.
Conversion factors are exact international definitions where one exists and standard reference values elsewhere. Results are rounded to 8 significant digits.