# Kilometers per Hour to Kilometers per Second Converter

Enter the speed in kilometers per hour below to get the value converted to kilometers per second.

Results in Kilometers per Second: 1 km/h = 0.000278 km/s

Do you want to convert kilometers per second to kilometers per hour?

## How to Convert Kilometers per Hour to Kilometers per Second

To convert a measurement in kilometers per hour to a measurement in kilometers per second, divide the speed by the following conversion ratio: 3,600 kilometers per hour/kilometer per second.

Since one kilometer per second is equal to 3,600 kilometers per hour, you can use this simple formula to convert:

kilometers per second = kilometers per hour ÷ 3,600

The speed in kilometers per second is equal to the speed in kilometers per hour divided by 3,600.

For example, here's how to convert 5,000 kilometers per hour to kilometers per second using the formula above.
kilometers per second = (5,000 km/h ÷ 3,600) = 1.388889 km/s

Kilometers per hour and kilometers per second are both units used to measure speed. Keep reading to learn more about each unit of measure.

## What Are Kilometers per Hour?

Kilometers per hour are a measurement of speed expressing the distance traveled in kilometers in one hour.

The kilometer per hour, or kilometre per hour, is an SI unit of speed in the metric system. Kilometers per hour can be abbreviated as km/h, and are also sometimes abbreviated as kph. For example, 1 kilometer per hour can be written as 1 km/h or 1 kph.

In the expressions of units, the slash, or solidus (/), is used to express a change in one or more units relative to a change in one or more other units. For example, km/h is expressing a change in length or distance relative to a change in time.

Kilometers per hour can be expressed using the formula:
vkm/h = dkm / thr

The velocity in kilometers per hour is equal to the distance in kilometers divided by time in hours.

## What Are Kilometers per Second?

Kilometers per second are a measurement of speed expressing the distance traveled in kilometers in one second.

The kilometer per second, or kilometre per second, is an SI unit of speed in the metric system. Kilometers per second can be abbreviated as km/s, and are also sometimes abbreviated as km/sec. For example, 1 kilometer per second can be written as 1 km/s or 1 km/sec.

Kilometers per second can be expressed using the formula:
vkm/s = dkm / tsec

The velocity in kilometers per second is equal to the distance in kilometers divided by time in seconds.

## Kilometer per Hour to Kilometer per Second Conversion Table

Table showing various kilometer per hour measurements converted to kilometers per second.
Kilometers Per Hour Kilometers Per Second
1 km/h 0.000278 km/s
2 km/h 0.000556 km/s
3 km/h 0.000833 km/s
4 km/h 0.001111 km/s
5 km/h 0.001389 km/s
6 km/h 0.001667 km/s
7 km/h 0.001944 km/s
8 km/h 0.002222 km/s
9 km/h 0.0025 km/s
10 km/h 0.002778 km/s
20 km/h 0.005556 km/s
30 km/h 0.008333 km/s
40 km/h 0.011111 km/s
50 km/h 0.013889 km/s
60 km/h 0.016667 km/s
70 km/h 0.019444 km/s
80 km/h 0.022222 km/s
90 km/h 0.025 km/s
100 km/h 0.027778 km/s
200 km/h 0.055556 km/s
300 km/h 0.083333 km/s
400 km/h 0.111111 km/s
500 km/h 0.138889 km/s
600 km/h 0.166667 km/s
700 km/h 0.194444 km/s
800 km/h 0.222222 km/s
900 km/h 0.25 km/s
1,000 km/h 0.277778 km/s
2,000 km/h 0.555556 km/s
3,000 km/h 0.833333 km/s
4,000 km/h 1.1111 km/s
5,000 km/h 1.3889 km/s
6,000 km/h 1.6667 km/s
7,000 km/h 1.9444 km/s
8,000 km/h 2.2222 km/s
9,000 km/h 2.5 km/s
10,000 km/h 2.7778 km/s

## References

1. National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units, https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-style-conventions-printing-and-using