Speed Converter
Convert between m/s, km/h, mph, knots, and ft/s.
About Speed Conversion
Conversions are based on exact unit factors (e.g., 1 mph = 1.609344 km/h) and computed entirely in your browser.
About this Speed Converter
Convert between meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), knots, and feet per second (ft/s). Our speed converter supports all common speed measurements used in transportation, sports, science, and engineering. Perfect for converting vehicle speeds, wind speeds, or any scenario requiring speed conversions. The tool provides accurate conversions with support for many speed units.
Key Features
Convert between m/s, km/h, mph, knots, and ft/s
Support for metric and imperial speed units
Real-time conversion as you type
Bidirectional conversion
Accurate calculations
Support for many speed units
Easy unit switching
Works entirely in your browser for privacy
How to Use
Enter the speed value you want to convert
Select the source unit (e.g., km/h)
Select the target unit (e.g., mph)
View the converted value automatically
Switch units to convert in reverse
Use for any speed conversion needs
Copy converted values if needed
Convert between any supported units
Popular Use Cases
Convert vehicle speeds between units
Calculate wind speeds in different units
Convert speeds for sports and athletics
Calculate speeds for engineering
Convert speeds for international use
Understand speeds in different units
Convert speeds for scientific calculations
Calculate travel speeds
Tips & Best Practices
1 km/h = 0.621371 mph = 0.277778 m/s
1 mph = 1.60934 km/h = 0.44704 m/s
1 knot = 1.15078 mph = 1.852 km/h
Use metric units (km/h, m/s) for international standards
Use imperial units (mph) for US measurements
Verify conversions for important calculations
Use for accurate speed calculations
Frequently Asked Questions
What speed units are supported?
The tool supports common speed units including meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), knots, and feet per second (ft/s).
How accurate are the conversions?
Conversions are highly accurate, using standard conversion factors. The tool provides precise calculations for all supported units.
What is a knot?
A knot is a unit of speed equal to one nautical mile per hour, commonly used in aviation and maritime navigation. 1 knot = 1.15078 mph = 1.852 km/h.
Can I convert between metric and imperial units?
Yes, the tool supports conversion between all units, including conversions between metric (km/h, m/s) and imperial (mph, ft/s) systems.