21 Knot = 38.891935 Kilometer per Hour
21 kn = 38.891935 km/h
Conversion Formula
1 kn = 1.851997 km/h
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Photography
70 Foot lambert
239.841 Candela per square meter
fL → cd/m²
Area
19 Hectare
46.949981 Acre
ha → ac
Magnetic field
26 Tesla
260,000.00 Gauss
T → G
Inductance
67 Kilohenry
67,000.00 Henry
kH → H
Electric conductance
56 Reciprocal ohm
56 Siemens
1/Ω → S
Viscosity
83 Stokes
8,300.00 Centistokes
St → cSt