Use this online speed converter tool to convert between different units of speed (magnitude of velocity). The speed units supported by this calculator include km per hour, miles per hour, meters per second, feet per second, yards per second and knot.
Read: Length Converter – Convert Between Different Units of Lengths
What Units of Speed are Supported?
You can seamlessly convert a wide range of speed measurements with the speed converter tool. Whether you're working with the Metric or Imperial system, here's a detailed list of units you can convert:
- Metric Units:
- Meters per second (m/s)
- Kilometers per hour (km/h)
- Imperial Units:
- Miles per hour (mph)
- Feet per second (ft/s)
- Yards per second (yd/s)
- Aeronautical and Nautical Units:
- Knots (kt, nautical miles per hour)
For example, consider that 1 meter per second equals roughly 3.6 kilometers per hour, or 1 kilometer per hour equals about 0.2777778 meters per second. Understand that 1 mile per hour is close to 1.46667 feet per second or 0.44704 meters per second.
It's important to understand that the tool adheres to internationally recognized standards and symbols, ensuring that your conversions are both precise and consistent globally. The symbols might differ across various locations, but for the most part, an abbreviation like "mph" typically refers to miles per hour.
The figures you receive are accurate down to ten decimal places—far exceeding the precision required for most practical purposes.
Speed Conversion Example
The process is straightforward when you're looking to change kilometers per hour into miles per hour.
Kilometers per hour to Miles per hour conversion example
Task:
Convert 80 km/h to mph.
Formula:
km/h ÷ 1.609344 = mph
Solution:
80 ÷ 1.609344 = 49.710 mph
Km per hour to Meters per second conversion example
Task:
Convert 100 km/h to meter per second
Formula:
km/h / 3.6 = m/s
Solution:
100 ÷ 3.6 = 27.77 m/s
Speed Conversion Tables
| Kilometers per Hour (km/h) | Miles per Hour (mph) |
|---|---|
| 1 | 0.621 |
| 2 | 1.243 |
| 3 | 1.864 |
| 4 | 2.485 |
| 5 | 3.107 |
| 6 | 3.728 |
| 7 | 4.350 |
| 8 | 4.971 |
| 9 | 5.592 |
| 10 | 6.214 |
| 20 | 12.427 |
| 30 | 18.641 |
| 40 | 24.855 |
| 50 | 31.069 |
| 60 | 37.282 |
| 70 | 43.496 |
| 80 | 49.710 |
| 90 | 55.923 |
| 100 | 62.137 |
Please note that the conversion factor from kilometers per hour to miles per hour is approximately 0.621371. Thus, to convert km/h to mph, you multiply the speed in km/h by 0.621371. For simplicity, the values in the "Miles per Hour (mph)" column are rounded to three decimal places.
| Meters per Second (m/s) | Feet per Second (ft/s) |
|---|---|
| 1 | 3.281 |
| 2 | 6.562 |
| 3 | 9.843 |
| 4 | 13.123 |
| 5 | 16.404 |
| 6 | 19.685 |
| 7 | 22.966 |
| 8 | 26.247 |
| 9 | 29.528 |
| 10 | 32.808 |
| 20 | 65.617 |
| 30 | 98.425 |
| 40 | 131.234 |
| 50 | 164.042 |
| 60 | 196.850 |
| 70 | 229.659 |
| 80 | 262.467 |
| 90 | 295.276 |
| 100 | 328.084 |
The conversion factor from meters per second to feet per second is approximately 3.28084. To convert m/s to ft/s, you multiply the speed in m/s by 3.28084. For clarity, the values in the "Feet per Second (ft/s)" column are rounded to three decimal places.