Inductance as a straight wire over the plain with one grounded end:

Inductance is used on UHF. Of course, we have to present this inductor as a segment of a long-line to get more right result. However, this formula have a reasonable accuracy.

Calculation formula is taken from the ARRL Handbook For Radio Communications:

L = Inductance µH

a = radius of the wire in inches

b = length of the conductor parallel to the plain in inches

h = height above the plain in inches

Proposed below calculator uses this formula with sizes transformed in the metric system:

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