TensorRank

TensorRank[tensor] gives the rank of a tensor.

Examples

Get the rank of a matrix:

TensorRank[{{1, 2}, {3, 4}}]
(* 2 *)

Get the rank of a vector:

TensorRank[{1, 2, 3}]
(* 1 *)

Please visit the official Wolfram Language Reference for more details.