Speed Conversion Guide: Velocity and Rate Measurements
Convert between mph, km/h, knots, and meters per second. Essential for travel, physics, and understanding speed limits worldwide.
Conveelo Team
Speed conversions are essential for international travel, physics, aviation, and understanding speed limits across different countries.
Popular Speed Conversions
- Miles per Hour to Kilometers per Hour
- Kilometers per Hour to Miles per Hour
- Knots to Miles per Hour
- Meters per Second to Kilometers per Hour
Quick Reference
- 1 mph = 1.609 km/h = 0.447 m/s
- 1 km/h = 0.621 mph = 0.278 m/s
- 1 m/s = 3.6 km/h = 2.237 mph
- 1 knot = 1.852 km/h = 1.151 mph
- 30 mph = 48 km/h (residential)
- 55 mph = 89 km/h (rural)
- 70 mph = 113 km/h (highway)
Sources & References
- International Bureau of Weights and Measures (BIPM), *The International System of Units (SI)* — bipm.org/en/publications/si-brochure
- National Institute of Standards and Technology (NIST), *Guide for the Use of the International System of Units* — nist.gov/pml/special-publication-811