Speed Converter
km/h, mph, metres per second, feet per second and knots.
0.6213711922 mph
1 km/h = 0.6213711922 mph
1 kilometre per hour in every speed unit
metre per second0.27777778 m/s
mile per hour0.62137119 mph
foot per second0.91134442 ft/s
knot0.5399568 kn
kilometre per hour to mile per hour table
| kilometre per hour (km/h) | mile per hour (mph) |
|---|---|
| 1 | 0.62137119 |
| 2 | 1.2427424 |
| 5 | 3.106856 |
| 10 | 6.2137119 |
| 20 | 12.427424 |
| 50 | 31.06856 |
| 100 | 62.137119 |
| 250 | 155.3428 |
| 500 | 310.6856 |
| 1,000 | 621.37119 |
Units and factors
| Unit | Symbol | In metre per seconds |
|---|---|---|
| metre per second | m/s | 1 |
| kilometre per hour | km/h | 0.2777777778 |
| mile per hour | mph | 0.44704 |
| foot per second | ft/s | 0.3048 |
| knot | kn | 0.5144444444 |
Single conversions
Questions people ask
How do I convert kilometre per hours to mile per hours?
Multiply by 0.6213711922. For example 10 km/h = 6.2137119 mph.
What is the base unit for speed?
The converter uses the metre per second as its internal base. Every unit is converted to metre per seconds and then to the target unit, so any pair of units works.
Where do the conversion factors come from?
From the legal definitions published in NIST Special Publication 811 and the SI Brochure (BIPM). Where a unit is defined exactly, the factor is exact.