How long should your radio spot be?
Length is the first choice, and it is simpler than it looks. Pick the shortest length that lets you say one idea well.
Thirty seconds
Thirty seconds is the everyday choice on the radio. It holds about 65 spoken words, enough for a hook, one main idea, your offer and how to reach you.
Sixty seconds
Sixty seconds gives you room for a short story or two points. It holds about 135 words. Use it when your business needs a little explaining, or when you want to say your number twice.
Ninety seconds
Ninety seconds is for a story. It holds about 205 words. It works well for your website, a podcast, or a business with a lot to say.
A simple rule
If you are not sure, start with thirty. A tight thirty-second spot is stronger than a sixty that wanders.