How many characters may I include in a text message? Melissa Carron May 03, 2018 19:53 Updated Follow A standard text message is limited to 160 characters. Characters means letters, numbers, spaces, symbols and punctuation. Related articles Do my contacts pay to receive text messages? How long does it take to get started? Do Keywords Cost Anything? Are there rules for how I can promote my Keyword online or in print? What Are opt-out Numbers? Comments 0 comments Please sign in to leave a comment.