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Unit Conversion Tool
Speed Converter
Convert between miles per hour (mph), kilometers per hour (km/h), meters per second, knots, and other speed units instantly.
Common Conversions
1 mph = 1.609 km/h
1 km/h = 0.621 mph
1 m/s = 3.6 km/h
1 knot = 1.852 km/h
Convert Speed Units
Enter a value and select the unit to convert
MPH to KM/H Conversion Table
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 10 | 16.09 |
| 20 | 32.19 |
| 30 | 48.28 |
| 40 | 64.37 |
| 50 | 80.47 |
| 60 | 96.56 |
| 70 | 112.65 |
| 80 | 128.75 |
| 90 | 144.84 |
| 100 | 160.93 |
KM/H to MPH Conversion Table
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 10 | 6.21 |
| 20 | 12.43 |
| 30 | 18.64 |
| 40 | 24.85 |
| 50 | 31.07 |
| 60 | 37.28 |
| 70 | 43.50 |
| 80 | 49.71 |
| 90 | 55.92 |
| 100 | 62.14 |
| 110 | 68.35 |
| 120 | 74.56 |
Understanding Speed Units
Miles per hour (mph) is primarily used in the United States and United Kingdom for road speeds and vehicle speedometers.
Kilometers per hour (km/h) is the most widely used unit globally, standard in most countries for road traffic and general speed measurements.
Meters per second (m/s) is the SI unit of speed, commonly used in physics and scientific contexts.
Knots are used primarily in maritime and aviation contexts. One knot equals one nautical mile per hour.
Conversion Formulas
MPH to KM/H
km/h = mph × 1.60934
KM/H to MPH
mph = km/h × 0.621371
M/S to KM/H
km/h = m/s × 3.6
Knots to KM/H
km/h = knots × 1.852