Can this be converted to wind speed in knots or kph?

In relation to wind resistance on a marquee FIGURE OF 73.5 NMsquared was given. Can this be converted to wind speed/load in lbs or knots/kph

Could you repeat the whole question?

Convert miles per hour to knots?

From Online Conversion - All Speed and Velocity Conversions

1 mile/hour = 0.868 976 241 91 knot

Please, do not mess up the letters.

NM is one thing, nm is another thing.

nm is nanometre
means normal cubic metres, or newtons per cubic metres
NM is New Mexico...
could be Newtons per metre square, which is in fact pressure...