Kilometer per hour to Foot per second Conversion Calculator: Free Online Tool
Convert kilometers per hour to feet per second with our free online speed converter.
Kilometer per hour to Foot per second Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Kilometer per hour).
- The converted value in Foot per second will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Speed category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Kilometer per hour to Foot per second
Converting Kilometer per hour to Foot per second involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Kilometer per hour = 0.911344 feet per secondExample Calculation:
Convert 60 kilometers per hour: 60 × 0.911344 = 54.68066 feet per second
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Kilometer per hour and a Foot per second?
Kilometers per hour (km/h or kph) is a unit of speed expressing the number of kilometers traveled in one hour.
Feet per second (ft/s, fps, or ft/sec) is a unit of speed in the imperial and US customary systems. It measures the distance in feet traveled in one second.
Note: The Kilometer per hour is part of the metric (SI) system, primarily used globally in science and trade. The Foot per second belongs to the imperial/US customary system.
History of the Kilometer per hour and Foot per second
Kilometers per hour became a common unit of speed with the widespread adoption of the metric system for distance (kilometer) and the standard use of hours for time measurement, particularly following the advent of automobiles and trains where measuring such speeds became practical and necessary.
The foot as a unit of length has ancient origins, and the second became standardized more recently. Feet per second emerged as a logical unit for measuring speed in contexts where feet were the standard measure of distance, particularly before widespread metrication.
Common Uses for kilometers per hour and feet per second
Explore the typical applications for both Kilometer per hour (metric) and Foot per second (imperial/US) to understand their common contexts.
Common Uses for kilometers per hour
- Road Traffic: The most common unit for speed limits and vehicle speeds (speedometers) worldwide, except in countries like the US and UK.
- Meteorology: Often used in public weather forecasts to report wind speeds, especially in metric countries.
- Navigation: Used alongside other units like knots in some aviation and maritime contexts, although less common than knots for primary navigation.
- Sports: Sometimes used to describe speeds in cycling, skiing, or running over longer distances.
Common Uses for feet per second
- Physics & Engineering (Imperial/US): Used in calculations involving velocity and acceleration in systems using imperial units, particularly in older texts or specific industries (e.g., some aerospace applications).
- Ballistics: Often used to measure the muzzle velocity of firearms.
- Fluid Dynamics (Imperial/US): Can be used to express the speed of fluid flow in pipes or channels in US customary units.
- Some Scientific Instruments: Certain instruments might output readings in ft/s depending on their design and intended application region.
Frequently Asked Questions
Questions About Kilometer per hour (km/h)
Where is km/h primarily used?
Kilometers per hour is the standard unit for road speed in most countries around the world that use the metric system.
Is km/h an SI unit?
While it uses SI units (kilometer and hour derived from second), the official SI unit for speed is meters per second (m/s). However, km/h is accepted for use with SI.
How do you convert km/h to mph?
To approximate, divide the speed in km/h by 1.609. So, 100 km/h is roughly 62 mph. (1 km/h ≈ 0.621371 mph).
How do you convert km/h to m/s?
Divide the speed in km/h by 3.6. So, 100 km/h is approximately 27.78 m/s.
About Foot per second (ft/s)
Is ft/s commonly used for everyday speed?
No, miles per hour (mph) is much more common for everyday speeds (like driving) in countries using the imperial/US customary system. ft/s is more technical.
Is ft/s an SI unit?
No, it belongs to the imperial and US customary systems. The SI unit for speed is meters per second (m/s).
How do you convert ft/s to mph?
Divide the speed in ft/s by 1.46667. So, 88 ft/s is approximately 60 mph.
How do you convert ft/s to m/s?
Multiply the speed in ft/s by 0.3048. So, 10 ft/s is equal to 3.048 m/s.
Conversion Table: Kilometer per hour to Foot per second
| Kilometer per hour (km/h) | Foot per second (ft/s) |
|---|---|
| 1 | 0.911 |
| 5 | 4.557 |
| 10 | 9.113 |
| 25 | 22.784 |
| 50 | 45.567 |
| 100 | 91.134 |
| 500 | 455.672 |
| 1,000 | 911.344 |
All Speed Conversions
Other Units from Speed
Conversion Formula
1 km/h = 0.911344 ft/s
Where 1 Kilometer per hour (km/h) equals the calculated value in feet per second (ft/s).