When writing copy, the writer must match the pace of the creative intention of the spot. This is difficult to do if you don't have a good idea of how many words will fit into the time you have. You either end up with an over or under written spot that is a mismatch with the other creative elements or leaves branding space on the table.
Play the samples below to hear how a :30 spot will sound with a variety of word counts. the pace you hear below will be the same pace for a ''wall to wall'' :30. All spoken numbers were accounted for in the word count (2023 = Twenty Twenty Four). If you are writing for a :15 or :60 divide by or multiply by 2.
For reference a moderate reading speed is approximately 160 words per minute