Speed Converter
Fast speed and velocity unit conversion supporting mph, km/h, m/s and more
Speed Input
Common speed unit
Unit Categories
Quick Set
Conversion Results
(7 units)Enter a value to see conversions
Start by entering a speed value above
How to Use the Speed Converter
Fast and accurate velocity conversions for automotive, aviation, and physics
Enter Speed
Input the speed or velocity value
Select Unit
Choose from common, aviation, or scientific units
View Results
See instant conversions to all speed units
Copy & Use
Copy results for calculations and reports
Speed Units by Category
Explore speed units organized by application areas
Common Units
- Kilometers per Hour (km/h)
- Miles per Hour (mph)
- Meters per Second (m/s)
- Feet per Second (fps)
Aviation
- Knots (kn)
- Mach Number (Mach)
Used in aviation and marine navigation
Scientific
- Speed of Light (c)
For physics calculations and cosmic measurements
Applications
- Automotive engineering
- Sports & athletics
- Physics calculations
- Weather analysis
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Use Tool →Professional Speed Converter
Fast, accurate speed and velocity conversions for automotive, aviation, and scientific applications. Support all major speed units with real-time calculations.
Instant Results
Real-time conversion to all supported units
High Precision
Scientific-grade accuracy for all conversions
Multiple Systems
Common, aviation, and scientific units
Perfect For
Automotive & transportation
Aviation & marine navigation
Physics & sports analysis
Frequently Asked Questions
Which speed units are supported?
Our converter supports all major speed units including km/h, mph, m/s, knots, fps, Mach, and even the speed of light. Perfect for automotive, aviation, and scientific applications.
What's the difference between speed and velocity?
Speed is a scalar quantity (magnitude only), while velocity is a vector (magnitude and direction). Our converter handles speed measurements for practical applications.
How accurate is the Mach number conversion?
Mach conversions use standard atmospheric conditions (343 m/s at 20°C). For precise aviation calculations, consider temperature and altitude variations.
Can I convert between mph and km/h easily?
Yes! The most common conversion. 1 mph ≈ 1.609 km/h and 1 km/h ≈ 0.621 mph. Perfect for international travel and automotive applications.
Is this suitable for sports timing?
Absolutely! Convert running speeds, cycling speeds, and other athletic measurements. Includes m/s and fps for sprint times and field sports analysis.
What about nautical speeds?
Yes! Supports knots (nautical miles per hour) for marine navigation and aviation. 1 knot = 1.852 km/h = 1.151 mph, based on nautical mile definition.