Instagram Reels Hashtags vs Keywords: What to Put in Your Caption

Many creators wonder about Instagram Reels hashtags vs keywords, and whether one should replace the other. The honest answer is that they do different jobs, and you can use both in the same caption without overthinking it.

If your question is a little different, these guides cover it: Hashtags vs Keywords: What Is the Difference on Social Media?.

This guide explains the difference, shows what to put in a Reels caption and gives you a simple template. Rules and features change, so confirm current details in Instagram's official Help Center before you rely on anything here.

What hashtags do and what keywords do

A hashtag is a clickable label that starts with the # symbol. Hashtags group content by topic, so a post about sourdough can sit alongside other sourdough posts. As of this writing, Instagram's Help Center says you can use up to 5 hashtags on a post, and the company has said hashtags matter less for reach than they once did.

A keyword is simply a word or phrase that describes your content in normal language. It might sit in your caption, your on-screen text, your spoken words or your alt text. Instagram describes using signals such as captions, keywords, alt text and the words spoken or shown in a video to understand what a post is about.

So the difference is easy to remember. A hashtag is a label you attach. A keyword is a word you write or say as part of the content itself. For a wider view of the topic across platforms, see hashtags vs keywords: what is the difference.

Instagram Reels hashtags vs keywords: which matters more?

No one outside Instagram can say exactly how much each one counts, and nobody can promise a result from either. What you can do is use both sensibly.

Here is a practical way to think about it:

• Keywords explain the video in plain words. They help a viewer and the platform understand the topic.
• Hashtags add a small number of precise topic labels on top.
• Neither replaces a strong first few seconds and a video people want to watch.

If you had to put effort into one, a clear caption with natural keywords is a safe place to start. It helps people who read it, whether or not any hashtag works as hoped. Then add a few relevant hashtags as a finishing touch.

What to put in your Reels caption

A caption has limited space that people actually read, so make it count. A simple structure works well:

1. First line: say what the video is, using the main keyword phrase. For example, "Three quick stretches for desk workers."
2. Middle: add one or two lines of useful context, a tip or a question.
3. End: include 3 to 5 relevant hashtags, up to the current limit.

Avoid stuffing the caption with repeated phrases. Write it as if you were explaining the video to a friend. If a sentence reads oddly because of a keyword, rewrite it.

Also think about the words that appear in the video. Say the topic out loud early, and consider adding on-screen text that names it. These are keywords too, since Instagram describes using the words spoken or shown in a video.

Choosing keywords for a Reel

Start with the exact question your video answers. People often search with a problem, such as "how to fold a fitted sheet", rather than with a single word.

Try these ways to find phrases:

• Type your topic into the Instagram search bar and note the suggestions.
• Think about the words a beginner would use, not the jargon you know.
• Use the same phrase in your caption, on-screen text and speech.
• Add a short description in the alt text field if it is available for your post.

Keep a running list of phrases for each topic, and reuse them in a natural way. For more on writing descriptions, the guide to Instagram alt text shows how to do it.

Choosing hashtags for a Reel

Pick tags that describe the topic and, if relevant, the audience. Instagram has advised using fewer, more targeted hashtags and avoiding generic tags such as #reels and #explore. These very broad labels do not tell anyone what your video contains.

A short checklist for each tag:

• Does it describe this exact video?
• Is it more specific than a single huge word?
• Would a viewer who clicks it expect to see content like mine?

If the answer to any is no, drop it. Fewer than five honest tags is fine. For help on the number question, read how many hashtags you should use on Instagram.

Worked example: one Reel, caption and tags (hypothetical)

This is a made-up illustration, not a real case, and it shows no results. Imagine a small account about home organisation, posting a 20-second Reel on tidying a kitchen drawer.

1. Main keyword phrase: "how to organise a kitchen drawer".
2. Spoken line: the creator says "Here is how to organise a kitchen drawer in three steps" in the first two seconds.
3. On-screen text: "Organise a kitchen drawer: 3 steps".
4. Caption first line: "How to organise a kitchen drawer in three simple steps."
5. Caption middle: "Empty it, sort by use, then add dividers. Which drawer is next on your list?"
6. Hashtags: four tags, such as a kitchen organisation tag, a home organising tag, a declutter tag and the account's own brand tag.
7. Check: no generic tags, and the count is within the current limit.

Say the topic in plain words in the caption, on screen and out loud. Then add 3 to 5 specific hashtags as labels.

You can brainstorm phrase ideas for step 1 and step 6 with the free tag generator, then edit them by hand so they match your video.

Where to place hashtags

You can put hashtags in the caption or in a comment. Whether first-comment hashtags help is unproven, and the 5-hashtag limit may apply there as well. The evidence is unclear, so test it rather than assume.

Try tags in the caption for a few Reels, then in a comment for a few similar ones, and compare in Instagram Insights. Metrics there include reach, saves, shares, likes, comments and profile visits. Exact menu names change, so look around if a label has moved. Keep the rest of your approach steady so the comparison is fair.

Frequently asked questions

Can I use only keywords and no hashtags on a Reel?

Yes, you can. Hashtags are optional. A clear caption, spoken words and on-screen text all help describe your video. If you add hashtags, keep them few and relevant, and check the Help Center for current limits.

Do keywords in my caption guarantee more views?

No. Instagram describes using captions, keywords and other signals to understand a post, but this is not a ranking guarantee. Keywords make your content clearer. Views also depend on how people respond to the video itself.

Should I use the same hashtags on every Reel?

It is better to match tags to each video. A fixed set can drift away from what the Reel is about. You can keep a small pool per topic, and choose a few from it each time.

Conclusion

Hashtags label your content, keywords describe it, and a good Reels caption uses both in a natural way. Lead with a clear keyword phrase, speak and show the topic, and finish with a few specific hashtags.

Your next step: rewrite the caption of your next Reel using the three-part structure above, and note which tags you chose. After a few posts, compare results in Insights.

Official sources

Platform features and rules change. For the current wording, check the official help pages:

• Instagram Help Center