The dielectric constant is often quoted as the relative dielectric constant ϵ r {\displaystyle \epsilon _{r}} referred to the dielectric constant of free space ϵ 0 {\displaystyle \epsilon _{0}} : ϵ = ϵ r ϵ 0 {\displaystyle \epsilon =\epsilon _{r}\epsilon _{0}} .
Konstanta dielektrike shpesh shprehet si konstante dielektrike relative ϵ r {\displaystyle \epsilon _{r}} , duke iu referuar konstantës dielektrike të hapësirës së lirë ϵ 0 {\displaystyle \epsilon _{0}} : ϵ = ϵ r ϵ 0 {\displaystyle \epsilon =\epsilon _{r}\epsilon _{0}} .