Speed Converter
Convert km/h, mph, meters per second, feet per second and knots.
In other units
- Meters per second
- 0.2777777778 m/s
- Miles per hour
- 0.6213711922 mph
- Feet per second
- 0.9113444153 ft/s
- Knots
- 0.5399568035 kn
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Common conversions
| km/h | mph |
|---|---|
| 10 | 6.21371 |
| 20 | 12.4274 |
| 30 | 18.6411 |
| 40 | 24.8548 |
| 50 | 31.0686 |
| 60 | 37.2823 |
| 80 | 49.7097 |
| 90 | 55.9234 |
| 100 | 62.1371 |
| 110 | 68.3508 |
| 120 | 74.5645 |
| 130 | 80.7783 |
| mph | km/h |
|---|---|
| 10 | 16.0934 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 30 | 48.2803 |
| 40 | 64.3738 |
| 50 | 80.4672 |
| 55 | 88.5139 |
| 60 | 96.5606 |
| 65 | 104.607 |
| 70 | 112.654 |
| 75 | 120.701 |
| 80 | 128.748 |
| m/s | km/h |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
| 20 | 72 |
| 50 | 180 |
| 100 | 360 |
| 1,000 | 3,600 |
| kn | km/h |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 10 | 18.52 |
| 20 | 37.04 |
| 50 | 92.6 |
| 100 | 185.2 |
| 1,000 | 1,852 |
Questions
How do I convert km/h to mph?
Divide by 1.609344, or multiply by about 0.6214. 100 km/h is about 62.1 mph, and 70 mph is about 112.7 km/h.
How do I convert m/s to km/h?
Multiply by 3.6. There are 3,600 seconds in an hour and 1,000 meters in a kilometer, so 10 m/s is 36 km/h.
What is a knot?
One nautical mile (1,852 m) per hour, exactly 1.852 km/h or about 1.15 mph. Ships, aircraft and wind forecasts use knots.
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