Speed Converter
Convert speed between miles per hour, kilometers per hour, knots, meters per second, and feet per second.
About This Free Online Speed Converter
Our free online speed converter instantly converts velocity between miles per hour (mph), kilometers per hour (km/h), knots, meters per second (m/s), and feet per second (ft/s). Enter a value, choose your starting unit, and every other unit updates live. Showing all units at once is ideal for driving, aviation, sailing, sports, and physics. All conversions run in your browser, keeping your data private.
Features of Our Speed Converter
- Convert mph, km/h, knots, m/s, and ft/s
- See all speed units update at once
- Useful for driving, aviation, and sailing
- Handles decimals and high speeds
- Live results as you type
- 100% private — browser-only processing
How to Use the Speed Converter
Using this tool is simple and requires no signup or registration. Follow these steps:
- Enter a speed value in the input field.
- Select the unit you are converting from.
- Read the equivalent in every other unit instantly.
- Click Copy to copy the full conversion summary.
Frequently Asked Questions About Speed Converter
How do I convert mph to km/h?
Multiply the miles-per-hour value by 1.609344. For example, 60 mph equals about 96.56 km/h. This tool does it instantly.
What is a knot?
A knot is one nautical mile per hour, used in aviation and marine navigation. One knot equals about 1.852 km/h or 1.15078 mph.
How do I convert km/h to m/s?
Divide the km/h value by 3.6. For example, 36 km/h equals 10 m/s. The converter shows meters per second automatically.
Is the conversion accurate for physics problems?
Yes. The tool uses exact factors (for example, 1 mph = 0.44704 m/s exactly), so results are precise enough for engineering and physics work.
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.