KM/H to M/S Calculator
Convert between speed units: km/h, mph, m/s, knots, and ft/s
Table of Contents
How to Use
- Enter the speed value you want to convert
- Select the source speed unit from the dropdown
- Select the target speed unit you want to convert to
- Click calculate to see the conversion result
- Review the conversion formula and all speed unit equivalents
Speed Units
Speed is measured in various units depending on the context and region. The most common units are kilometers per hour (km/h), miles per hour (mph), meters per second (m/s), knots, and feet per second (ft/s).
Understanding how to convert between these units is essential for international travel, scientific calculations, and various professional applications.
Conversion Factors
| From | To | Conversion Factor | Formula |
|---|---|---|---|
| km/h | m/s | ÷ 3.6 | km/h ÷ 3.6 = m/s |
| m/s | km/h | × 3.6 | m/s × 3.6 = km/h |
| mph | km/h | × 1.609 | mph × 1.609 = km/h |
| km/h | mph | ÷ 1.609 | km/h ÷ 1.609 = mph |
| knots | km/h | × 1.852 | kn × 1.852 = km/h |
| km/h | knots | ÷ 1.852 | km/h ÷ 1.852 = kn |
Frequently Asked Questions
- How do I convert km/h to m/s?
- To convert km/h to m/s, divide the speed in km/h by 3.6. For example, 72 km/h ÷ 3.6 = 20 m/s. This is because 1 km = 1000 m and 1 hour = 3600 seconds, so 1 km/h = 1000 m/3600 s = 1/3.6 m/s.
- What's the difference between km/h and mph?
- km/h (kilometers per hour) is used in metric countries and measures distance in kilometers over time in hours. mph (miles per hour) is used in the US and UK, measuring distance in miles over time in hours. 1 mph = 1.609 km/h.
- Why are knots used for maritime and aviation speeds?
- Knots are based on nautical miles, which are used in maritime and aviation navigation because they relate directly to the Earth's latitude lines. One knot equals one nautical mile per hour, where a nautical mile is 1.852 kilometers.
- How accurate are these speed conversions?
- These conversions use standard conversion factors that are accurate for most practical purposes. The precision depends on the number of decimal places used in the conversion factors. For most applications, 3-4 decimal places provide sufficient accuracy.