Impedance of PWB Trace

w= m
h= m
t= m  
εr=  
length= m
Z= ohm
L= H
C= F
Approximative formulas used:
L = length * 0.2 * ln(5.98*h/(0.8*w+t))
C = length * 0.0264 * (er+1.41) / ln(5.98*h/(0.8*w+t))
Z = 86.976 / sqrt(er+1.41) * ln(5.98*h/(0.8*w+t))
Z = 31.6 * sqrt(L/C)
The unit in above formulas are mm for length, nH for L, pF for C, ohm for Z.
Units for h, w and t can be μm, mm or m as long as the same unit is used for all.