639.9 Knot to Foot/Second Conversion
639.9 Knot to Foot/Second - Knot to Foot/Second - Velocity and Speed - Conversion
You are currently converting Velocity and Speed units from Knot to Foot/Second
639.9 Knot (kn)
=
1080.02953 Foot/Second (ft/s)
Visit 639.9 Foot/Second to Knot ConversionKnot : The knot is a non-SI unit for speed. It is equal to one nautical mile(1.852 km) per hour, and approximately equal to 1.151 mph (full name: mile per hour). Without standard abbreviation, the commonly used is kn, but kt and NMPH are also used. In the worldwide, the knot is popularly used in meteorology, and in maritime and air navigation.
Foot/Second : Feet per second is a unit for both speed and velocity. It is defined as the distance in feet traveled or displaced, divided by the time in seconds. Its abbreviations are ft/s, ft/sec and fps, and the scientific notation ft s-1. 1 ft/s = 0.3048 m/s.
Velocity and Speed Conversion Calculator
639.9 Knot = 1080.02953 Foot/Second
FAQ about Knot to Foot/Second Conversion
1 knot (kn) is equal to 1.68781 foot/second (ft/s).
1kn = 1.68781ft/s
The speed v in foot/second (ft/s) is equal to the speed v in knot (kn) times 1.68781, that conversion formula:
v(ft/s) = v(kn) × 1.68781
One Knot is equal to 1.68781 Foot/Second:
1kn = 1kn × 1.68781 = 1.68781ft/s
One Foot/Second is equal to 0.59248 Knot:
1ft/s = 1ft/s × 0.59248 = 0.59248kn
v(ft/s) = 5(kn) × 1.68781 = 8.43905ft/s
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