Speed Converter

About Speed Conversion

Instantly convert between common speed units used in science, driving, and aviation. Enter any value to see all equivalents.

Units Included

  • Meters per second (m/s) - SI unit.
  • Kilometers per hour (km/h) - Road speed.
  • Miles per hour (mph) - Imperial road speed.
  • Knots (kn) - Maritime and Aviation.
  • Feet per second (ft/s).

How to Use

  1. Enter a value in any speed unit field.
  2. Read instant conversions in other fields.
  3. Use Reset to clear all values.

Unit Differences

  • 1 m/s = 3.6 km/h = 2.237 mph.
  • 1 knot = 1.852 km/h (exactly).
  • 1 mph = 1.60934 km/h.
  • Mach 1 (speed of sound) ≈ 343 m/s (at sea level).

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