⚡ Speed Unit Converter
Convert between km/h, mph, m/s, knots, and ft/s instantly. Perfect for driving, aviation, sports, and physics calculations.
⚡ Converted Speed
100 km/h = 62.14 mph
📚 Speed Conversion Facts
- 1 km/h =0.6214 mph
- 1 mph =1.609 km/h
- 1 m/s =3.6 km/h
- 1 knot =1.852 km/h
- 1 ft/s =0.3048 m/s
- 1 knot =1.151 mph
🚗 Common Speed References
📊 Why Use a Speed Converter?
Speed conversion is essential in many situations - from understanding car speedometers in different countries to aviation, marine navigation, sports science, and physics calculations. Whether you're planning an international road trip, tracking athletic performance, or working on engineering projects, accurate speed conversion is crucial.
❓ Frequently Asked Questions
How do I convert km/h to mph quickly?
For a quick mental calculation, divide km/h by 1.6. For example, 100 km/h ÷ 1.6 = 62.5 mph (actual: 62.14 mph). For precise results, use our converter above.
What's the difference between knots and mph?
Knots are nautical miles per hour, used in aviation and marine navigation. 1 knot = 1.151 mph or 1.852 km/h. This is because a nautical mile is based on Earth's circumference.
How do I convert m/s to km/h?
Multiply meters per second by 3.6 to get kilometers per hour. For example, 10 m/s × 3.6 = 36 km/h. This works because 1 m/s = 3.6 km/h.
Why do different countries use different speed units?
Most countries use km/h (metric system). The US, UK, and a few others use mph (imperial system). Aviation and marine industries use knots globally for consistency.
⚠️ Disclaimer: All conversions are based on standard international definitions. For precise scientific or engineering applications, use exact conversion factors.