Convert between mph, km/h, m/s, knots, and other speed units instantly.
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Speed Converter
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How to Use This Calculator
1
Enter the speed value.
2
Select the unit you're converting from.
3
Click Calculate to see all speed equivalents.
How It Works
All conversions route through m/s (SI unit). 1 knot = 1 nautical mile/hour = 1.852 km/h. Used in aviation and maritime navigation. Speed of light = 299,792,458 m/s.
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