Systems and methods for performing on-the-fly format conversion on data vectors during load/store operations are described herein. In one embodiment, a method for loading a data vector from a memory into a vector unit comprises reading a plurality of samples from the memory, wherein the plurality of samples are packed in the memory. The method also comprises unpacking the samples to obtain a plurality of unpacked samples, performing format conversion on the unpacked samples in parallel, and sending at least a portion of the format-converted samples to the vector unit.