  Three dimensional (3D) toric codes are a class of stabilizer codes with local
checks and come under the umbrella of topological codes. While decoding
algorithms have been proposed for the 3D toric code on a cubic lattice, there
have been very few studies on the decoding of 3D toric codes over arbitrary
lattices. Color codes in 3D can be mapped to toric codes. However, the
resulting toric codes are not defined on cubic lattice. They are arbitrary
lattices with triangular faces. Decoding toric codes over an arbitrary lattice
will help in studying the performance of color codes. Furthermore, gauge color
codes can also be decoded via 3D toric codes. Motivated by this, we propose an
efficient algorithm to decode 3D toric codes on arbitrary lattices (with and
without boundaries). We simulated the performance of 3D toric code for cubic
lattice under bit flip channel. We obtained a threshold of 12.2\% for the toric
code on the cubic lattice with periodic boundary conditions.
