Via Capacitance (pF):

$$ C = \frac{1.41 \times E_r \times T \times D_{pad}}{D_{anti} - D_{pad}} $$

Via Inductance (nH):

$$ L = 5.08 \times T \times \left[\ln\left(\frac{4 \times T}{D_{hole}}\right) + 1\right] $$

Note: T is in inches for these specific empirical constants. Results are approximations for typical through-hole vias.