Speed Converter - Aviation & Racing Accuracy | Unitconvr
Convert km/h, mph, knots with pilot-grade precision. Real-time calculations, professional accuracy. Trusted by transport professionals globally.
Common Conversions
Speed Units Around the World
Speed measurement standards vary by country and application. Understanding these differences is crucial for travel, sports, and technical fields.
Road Speed Units
- • km/h: Most countries worldwide
- • mph: USA, UK, Myanmar
- • Speed limits: Urban 30-50 km/h
- • Highways: 80-130 km/h
Scientific & Aviation
- • m/s: Physics calculations
- • knots: Ships & aircraft
- • Mach: Supersonic speeds
- • c: Speed of light reference
Travel Tip: When driving abroad, remember that 100 km/h ≈ 62 mph. A quick mental conversion: divide km/h by 1.6 to get approximate mph.
Common Conversions
1 km/h = 0.621371 mph
1 mph = 1.60934 km/h
1 m/s = 3.6 km/h
1 knot = 1.852 km/h
1 ft/s = 0.3048 m/s
Speed of light = 299,792,458 m/s
Common Speeds
Walking Speed
Average walking: 5 km/h (3.1 mph)
City Driving
Typical city speed: 50 km/h (31 mph)
Highway Speed
Highway limit: 120 km/h (75 mph)
Commercial Aircraft
Cruising speed: 900 km/h (560 mph)
Sound Speed
Speed of sound: 343 m/s (1,235 km/h)
Sports Records
Running (100m record)
44.72 km/h (27.78 mph)
Cycling Sprint
70 km/h (43.5 mph)
Tennis Serve
263 km/h (163 mph)
Formula 1
370 km/h (230 mph)
Popular Converters
Most Used
1 Kilometer per hour = 0.6214 Mile per hour
1 Mile per hour = 1.6093 Kilometer per hour
1 Meter per second = 3.6000 Kilometer per hour
1 Kilometer per hour = 0.2778 Meter per second
1 Kilometer per hour = 0.5400 Knot
1 Knot = 1.8520 Kilometer per hour
All Converters
Browse our collection of 10 Speed converters. Each converter provides instant, accurate results for professional and academic use.