Kilometers per hour to Meters per second Converter
Convert Kilometers per hour (km/h) to Meters per second (m/s) instantly, or use the conversion table below to look up common values.
Kilometers per hour to Meters per second conversion table
| Kilometers per hour (km/h) | Meters per second (m/s) |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 3 | 0.833333 |
| 4 | 1.111111 |
| 5 | 1.388889 |
| 10 | 2.777778 |
| 25 | 6.944444 |
| 50 | 13.888889 |
| 100 | 27.777778 |
How to convert Kilometers per hour to Meters per second
1 km/h equals 0.277778 m/s. Use the converter above for any value, or read the table for common conversions.
m/s = km/h × 0.2777777777777778 · km/h = m/s × 3.5999999999999996Multiply a kilometers per hour figure by 0.277778 to get meters per second, or divide it by 3.6 to go the other way.
Worked examples
- 1 km/h= 0.277778 m/s
- 5 km/h= 1.388889 m/s
- 10 km/h= 2.777778 m/s
- 30 km/h= 8.333333 m/s
- 50 km/h= 13.888889 m/s
What these units are
Kilometers per hour (km/h). A kilometer per hour is 0.277778 meters per second. It is the unit on road signs and vehicle speedometers in Tanzania and most countries.
Meters per second (m/s). The meter per second is the SI unit of speed. It is used in science and engineering, where distances are in meters and time in seconds.
The 3.6 factor between m/s and km/h is exact, so those two convert losslessly. Knots and miles per hour are exact definitions as well.
Converting Kilometers per hour to Meters per second in practice
Working in kilometers per hour
Kilometers per hour measures how many kilometers are covered in one hour. The relationship with meters per second is exact: 1 m/s is exactly 3.6 km/h, so the two units differ by a fixed factor of 3.6.
The unit appears on road signs and in vehicle speed limit legislation, in wind and weather reports, in cycling and motoring specifications, and in everyday estimates of travel time over a known distance.
The metric relationships are exact, since 1 m/s is exactly 3.6 km/h and dividing a km/h value by 3.6 returns m/s. A knot is not a mile per hour, because the nautical mile and the statute mile are different lengths.
The usual error is reading a km/h figure as miles per hour, or treating a knot as a mile per hour because both describe distance over an hour. The unit label decides which conversion applies.
Miles per hour and knots are the siblings most easily confused with kilometers per hour. Kilometers per hour carries road postings and weather reports, miles per hour appears where signs are posted in that unit, and knots governs sea and air navigation.
Reading the result in meters per second
The meter per second is the SI unit of speed, one meter travelled in one second. One meter per second is exactly 3.6 kilometers per hour, a fixed factor that links the two units.
It is the unit of physics and engineering calculation, of wind and water current measurement, and of athletics, where sprint times and running speeds are reported in meters per second.
Multiplying a speed in m/s by 3.6 gives km/h exactly, and dividing by 3.6 returns m/s without rounding. A knot rests on the nautical mile and a mile per hour on the statute mile, so they are distinct units.
A frequent error is reporting a wind or current figure in knots when the source gave miles per hour, or quoting m/s for a road speed. Matching the unit to the context avoids a silent factor error.
Kilometers per hour, miles per hour and knots are the sibling units. Laboratory and weather measurement work in meters per second, driving and road postings use kilometers per hour or miles per hour, and marine and air navigation use knots.
Checking a kilometers per hour to meters per second conversion
Every speed unit is a distance over a time, so the conversion factor is just the distance factor divided by the time factor. Meters per second to kilometers per hour is a single multiplication by exactly 3.6, and a reader can hold that number.
The candidates for confusion are the mile and the nautical mile, because both appear in speed units. A knot is one nautical mile per hour, and a nautical mile is 1,852 meters against the statute mile's 1,609.344, so a knot is about 15% faster than a mile per hour. Treating the two as interchangeable understates a marine or aviation speed.
To check a speed conversion, convert it to meters per second and compare with something known, such as walking pace. The error to avoid is applying the 3.6 factor to a pair that is not m/s to km/h, when the correct move is to convert the distance and the time separately.
Tanzania reference points
Real quantities, converted into the units on this page.
The speed limit in built-up areas in Tanzania
50 km/h = 13.888889 m/s
Source: Road Traffic Act [Cap.168 R.E 2002] s.51, summarised by FB Attorneys · verified 2026-09-14
The maximum speed outside built-up areas for vehicles over 3,500 kg in Tanzania
80 km/h = 22.222222 m/s
Outside built-up areas the limit for other vehicles is set by posted signs and road markings rather than a single national figure.
Source: Road Traffic Act [Cap.168 R.E 2002] s.51, summarised by FB Attorneys · verified 2026-09-14
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