UnitSnapKilometers per Hour to Meters per Second
1 km/h = 0.2777778 m/s
Kilometers per hour to meters per second is a standard step in physics and engineering, where formulas for kinetic energy, braking distance, and acceleration need SI units. Car speeds and speed limits are given in km/h, so they are converted before calculating.
When you need to convert kilometers per hour to meters per second
- Physics problems that start from a car speed in km/h
- Calculating braking or stopping distances for road safety
- Converting wind speeds for engineering load calculations
- Working out how many meters a vehicle covers each second
How to convert kilometers per hour to meters per second
m/s = km/h × 0.2777778
Equivalently: m/s = km/h ÷ 3.6.
Example: 5 km/h = 1.388889 m/s
Common speeds
| Kilometers per Hour (km/h) | Meters per Second (m/s) |
|---|---|
| 5 km/h | 1.388889 m/s |
| 10 km/h | 2.777778 m/s |
| 30 km/h | 8.333333 m/s |
| 36 km/h | 10 m/s |
| 50 km/h | 13.88889 m/s |
| 60 km/h | 16.66667 m/s |
| 90 km/h | 25 m/s |
| 100 km/h | 27.77778 m/s |
| 120 km/h | 33.33333 m/s |
| 300 km/h | 83.33333 m/s |
Tips for converting kilometers per hour to meters per second
- Divide by exactly 3.6. The m/s figure should always be smaller than the km/h figure.
- Mental shortcut: divide by 4, then add 10% of that. The result is within about 1% of the exact value.
- For quick checks, the m/s value tells you roughly how many meters a car travels in one second, useful for following distance.
Kilometers per Hour to Meters per Second conversion table
| Kilometers per Hour (km/h) | Meters per Second (m/s) |
|---|---|
| 1 km/h | 0.2777778 m/s |
| 2 km/h | 0.5555556 m/s |
| 3 km/h | 0.8333333 m/s |
| 4 km/h | 1.111111 m/s |
| 5 km/h | 1.388889 m/s |
| 6 km/h | 1.666667 m/s |
| 7 km/h | 1.944444 m/s |
| 8 km/h | 2.222222 m/s |
| 9 km/h | 2.5 m/s |
| 10 km/h | 2.777778 m/s |
| 15 km/h | 4.166667 m/s |
| 20 km/h | 5.555556 m/s |
| 25 km/h | 6.944444 m/s |
| 30 km/h | 8.333333 m/s |
| 40 km/h | 11.11111 m/s |
| 50 km/h | 13.88889 m/s |
| 75 km/h | 20.83333 m/s |
| 100 km/h | 27.77778 m/s |
| 250 km/h | 69.44444 m/s |
| 500 km/h | 138.8889 m/s |
| 1,000 km/h | 277.7778 m/s |
About the units
Kilometers per Hour: Kilometers per hour is the unit for road speed limits and vehicle speedometers in most countries.
Meters per Second: Meters per second is the SI unit of speed, used in science, wind speed and athletics.
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Frequently asked questions
How many meters per second are in 1 kilometer per hour?
1 kilometer per hour equals 0.2777778 meters per second.
How many kilometers per hour are in 1 meter per second?
1 meter per second equals 3.6 kilometers per hour.
How do I convert kilometers per hour to meters per second?
Use the formula m/s = km/h × 0.2777778. Equivalently, m/s = km/h ÷ 3.6.
What is 10 kilometers per hour in meters per second?
10 kilometers per hour equals 2.777778 meters per second.
Related conversions
- Meters per Second to Kilometers per Hour
- Kilometers per Hour to Miles per Hour
- Miles per Hour to Kilometers per Hour
- Meters per Second to Miles per Hour
- Miles per Hour to Meters per Second
- Knots to Kilometers per Hour
- Kilometers per Hour to Knots
- Knots to Miles per Hour
- Miles per Hour to Knots
- Feet per Second to Meters per Second
- Meters per Second to Feet per Second
- Mach (at 20 °C) to Kilometers per Hour
- Kilometers per Hour to Mach (at 20 °C)
- All speed units
Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated