Speed Converter

Free online speed converter. Convert between different units of speed instantly and accurately.

Speed Units

• Meter per Second (m/s) — the base unit
• Kilometer per Hour (km/h) — 1 km/h = 0.277778 m/s
• Mile per Hour (mph) — 1 mph = 0.44704 m/s
• Foot per Second (ft/s) — 1 ft/s = 0.3048 m/s
• Knot (kn) — 1 kn = 0.514444 m/s
• Mach (M) — 1 M = 343 m/s

Common Speed Conversions

• Kilometer per Hour to Mile per Hour
• Knot to Mile per Hour
• Mach to Kilometer per Hour
• Meter per Second to Kilometer per Hour
• Mile per Hour to Foot per Second
• Mile per Hour to Kilometer per Hour

Speed Conversion Guides

• Kilometers per Hour to Miles per Hour: Speed Conversions for Travelers
• Mach to km/h: The Science of Supersonic Flight Speeds
• m/s to km/h: Mastering Metric Speed Conversions
• Miles per Hour to Feet per Second: Understanding Road Safety Speed
• Knots to MPH: The Essential Aviation and Maritime Speed Guide
• Running Pace Conversion: min/km, min/mile, km/h and mph

FAQ · Also from us: Simply Calculators
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