Speed Converter
Instantly convert between miles per hour (mph), kilometers per hour (km/h), meters per second (m/s), knots, and feet per second (ft/s). Get accurate results with decimal precision.
Step 1: Enter Speed
Common speed references
• 100 km/h ≈ 62 mph
• 10 m/s ≈ 36 km/h
• 1 knot = 1.852 km/h (nautical mile)
Step 2: Conversion Settings
About speed units
km/h (kilometres per hour), mph (miles per hour), m/s (metres per second), knots (nautical miles per hour), ft/s (feet per second).
Conversion Results
Primary converted speed
Speed Conversion Formulas
How to convert
All conversions use the metre per second (m/s) as the base. For example: to convert km/h to mph, first convert km/h to m/s (divide by 3.6), then convert m/s to mph (multiply by 2.23694).
Speed Comparison (input value in different units)
Bar chart shows the entered speed expressed in each unit.
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