Speed Conversion Guide
Speed conversion is essential for travel, aviation, maritime navigation, and physics. While km/h is used in most countries, mph is standard in the US and UK. Knots are used for air and sea navigation worldwide.
Key Conversion Factors
| From | To | Multiply by |
|---|---|---|
| km/h | mph | 0.621371 |
| mph | km/h | 1.60934 |
| m/s | km/h | 3.6 |
| knots | km/h | 1.852 |
| Mach 1 | km/h | 1234.8 |
FAQ
What is a knot?
A knot is one nautical mile per hour (1.852 km/h). It's used in maritime and aviation because it relates directly to latitude/longitude navigation.
What is Mach?
Mach is the ratio of speed to the speed of sound. Mach 1 is approximately 1,234.8 km/h at sea level and 15°C.