tf.rank(input, name=None)

tf.rank(input, name=None)

See the guide: Tensor Transformations > Shapes and Shaping

Returns the rank of a tensor.

This operation returns an integer representing the rank of input.

For example:

# 't' is [[[1, 1, 1], [2, 2, 2]], [[3, 3, 3], [4, 4, 4]]]
# shape of tensor 't' is [2, 2, 3]
rank(t) ==> 3

Note: The rank of a tensor is not the same as the rank of a matrix. The rank of a tensor is the number of indices required to uniquely select each element of the tensor. Rank is also known as "order", "degree", or "ndims."


  • input: A Tensor or SparseTensor.
  • name: A name for the operation (optional).


A Tensor of type int32.

numpy compatibility

Equivalent to np.ndim

Defined in tensorflow/python/ops/