Speed Converter
Convert any speed between mph, km/h, m/s, knots, Mach and ft/s — all values appear simultaneously as you type.
What Does This Tool Do?
Convert any speed between metres per second, km/h, mph, knots (nautical miles per hour), Mach and feet per second — all six units shown at once.
Key Features
6 Units
m/s, km/h, mph, knots, ft/s, Mach.
Live
All update instantly as you type.
Mach Included
Mach speed at sea level for aviation use.
Knots
Maritime navigation unit included.
How to Use
- Enter the speed value.
- Select the unit you are converting from.
- All six units update instantly.
Frequently Asked Questions
How many km/h is 1 mph?▾
1 mph = 1.60934 km/h exactly.
What is a knot?▾
1 knot = 1 nautical mile per hour = 1.852 km/h. Used in aviation and maritime navigation.
What is Mach 1?▾
Mach 1 ≈ 340.29 m/s (1234 km/h) at sea level and 15°C. The speed of sound varies with altitude and temperature.
Complete Guide to Speed Converter
When To Use This Tool
Use Speed Converter whenever you need fast, accurate output without installing software. This tool is designed for speed, clarity, and repeatable results for day-to-day work.
Best Practices for Accurate Results
- Double-check the format of your input before running the tool.
- Test with a small sample first, then process larger data.
- Use Related Tools to verify, convert, or transform the output.
Why Users Prefer AdeDX
AdeDX tools are browser-based, free to use, and built to work across desktop and mobile devices. Most processing happens directly in your browser for fast performance and improved privacy.