You will read many numbers: three, five, eleven, thirty. Apps change their advice and their limits, and no outside article can tell you the number that suits your posts. The honest answer is to use as many as are relevant and no more, and then to test.
Maximum is not a target
Every app sets a maximum number of hashtags per post. That is a limit to keep you from spamming, not advice on how many to use. See our limits section for the current figures once they are listed, and the app's own help page for the final word.
A simple test
- For a week, post with two or three relevant tags.
- The next week, post with six to eight.
- Compare the reach figures your app shows for each post.
- Keep whichever you prefer. Post types differ, so test photos and videos separately.
Quality beats count
Three tags that exactly match the post are better than twenty that vaguely match. Long rows of tags also make a caption look like an advert. If the tags would embarrass you in front of a friend, use fewer.
Where to put them
After the caption, separated by a blank line, or in the first comment. Either is fine. Pick one and keep it the same. Read the full method for choosing.
Questions people ask
Do hashtags still work?
They help people find posts about a subject, but apps use many signals. Do not expect a tag to guarantee reach. Good photos, a clear caption and regular posting matter more.