CHCl3 is non polar. Why?

CHCl3 has four covalent bonds, three C-Cl bonds and one C-H bond. The bond between carbon and hydrogen is considered nonpolar, but the bonds between carbon and chlorine are considered polar covalent.

As CHCl3 has low polarity index and dielectric constant because of the tetrahedral geometry within the molecule and their low polarity that is why it is considered a nonpolar despite being a slightly polar chemical compound.