Speed Converter

Convert between mph, km/h, m/s, knots, and mach with real-time conversion, speed comparisons, and distance/time calculator

Overview

The Speed Converter handles conversion between multiple speed units including miles per hour (mph), kilometers per hour (km/h), meters per second (m/s), knots, and mach. Whether you’re understanding international speed limits, calculating travel times, or working with scientific measurements, this tool provides instant accurate conversions.

Tips

  1. Quick Mental Conversion: To convert km/h to mph, multiply by 0.6 (or divide by 1.6). To convert mph to km/h, multiply by 1.6. For example, 100 km/h is roughly 60 mph.
  2. m/s Made Easy: Converting between m/s and km/h is simple - just multiply or divide by 3.6. So 10 m/s equals exactly 36 km/h.
  3. Know Your Knots: Knots are used in aviation and maritime contexts. One knot equals 1.852 km/h or about 1.15 mph - just add 15% to convert knots to mph.
  4. Mach Changes: The speed of sound (Mach 1) varies with temperature and altitude, but at sea level it’s approximately 1,235 km/h (767 mph or 343 m/s).
  5. Use the Calculator: The built-in distance/time calculator lets you find any variable when you know the other two. Perfect for trip planning or physics problems.