How many hashtags should a post have? Why every channel answers differently

According to the Threads Help Center, a post on Threads can have only one topic tag. X and LinkedIn don't cap the number. Post the same thing in all three places, and the number of hashtags may need to change from channel to channel too.

That's why the question of how many hashtags to use usually gets the answer "it depends on the channel". Hashtags do a different job on each channel, so the right number changes with the channel.

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What hashtags do on each channel

• On Threads, the one topic tag decides which topic your post belongs to. Since you get only one, the job is picking the closest topic.
• On X, a hashtag works as a signal that you are joining a conversation. One or two tend to look natural, and people often say more starts to look like an ad.
• On LinkedIn, a few topic tags at the end of a post are common. They are added in the hope that people who browse those topics come across the post.

That's why the same post needs its hashtags chosen again when it moves to another channel. Two tags that looked natural on X have to become one on Threads, and on LinkedIn they usually sit better at the end of the post.

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What to check before the count

Before the number, a question that comes up often is whether readers would actually search for that word. A word that only means something to the writer, or one so broad that countless posts share it, rarely reaches the people searching. A single tag in your readers' own words often does better than a long string of tags.

Posting with no hashtags is also an option. On Threads and X especially, people say a post can often stand on its text alone.

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The choice stays with you

Which words to pick comes down to who your readers are. Even on the same topic, the words readers use differ from one account to the next.

When you pick hashtags, what do you base the choice on?