What a hashtag does and why you need one

A hashtag is a word or phrase preceded by the # symbol that groups posts together on social media platforms. When you create one, you are giving people a way to find all posts about a specific topic, event, product, or campaign in one place. On Instagram, TikTok, Twitter, and LinkedIn, hashtags are how posts get discovered by people who do not already follow you.

Creating your own hashtag works best when you want to build community around something specific — a brand, an event, a campaign, or a movement. Your hashtag becomes a gathering point. People use it, others see it, and it grows. The hashtag itself does not do the work; the people using it do. Your job is to make one that is easy to remember, easy to spell, and worth using.

A hashtag that fails is usually one that is too generic, too long, or too hard to type. A hashtag that works is one that people want to use because it makes sense to them and because they see others using it.

Key Takeaways

  • Keep your hashtag short, easy to spell, and easy to remember — ideally under three words and without numbers or special characters.
  • Check that your hashtag does not already exist with a very different meaning by searching it on the platforms where you plan to use it.
  • Test your hashtag on a small audience first before launching a full campaign around it.
  • Use your hashtag consistently across all your posts and encourage others to use it by showing them examples and explaining why it matters.
  • Monitor how many people are using your hashtag and what they are posting under it so you know whether it is catching on.

Choose a hashtag that is short and memorable

The best hashtags are short enough to fit naturally into a sentence and memorable enough that someone hears it once and can spell it correctly the next time. Aim for one to three words maximum. If your hashtag is longer than that, people will forget it or misspell it, and your posts will scatter across different variations instead of gathering in one place.

Avoid numbers and special characters unless they are essential to your brand or message. A hashtag like #MarketingTips2024 is harder to remember than #MarketingTips. A hashtag like #Coffee&Creativity looks clean in your head but people will type #CoffeeCreativity or #Coffee_Creativity instead, splitting your audience.

Test the hashtag out loud. Say it to yourself. Does it sound natural? Can you spell it without thinking? If you stumble over it, other people will too. The hashtag #LocalSmallBizNetwork is harder to use than #SmallBizLocal. Both mean roughly the same thing, but one rolls off the tongue.

Search your hashtag on every platform you plan to use

Before you commit to a hashtag, search it on Instagram, TikTok, Twitter, LinkedIn, and any other platform where you plan to use it. You are looking for two things: whether the hashtag already exists, and if it does, what people are using it for.

A hashtag that already exists is not necessarily a problem. #MondayMotivation exists and millions of people use it every week. But if your hashtag already exists and is being used for something completely different from what you intend, you have a conflict. For example, if you create a hashtag for your coffee brand and that hashtag already means something else in a different industry, people searching for your brand will find the wrong posts.

If your hashtag already exists and is being used for something similar or compatible with your purpose, you can join it. If it is being used for something unrelated, pick a different hashtag. The goal is to own the space, not to fight for it.

Make sure your hashtag is easy to read

Capitalize the first letter of each word in your hashtag so it is easy to read. #SmallBizNetwork is clearer than #smallbiznetwork. This is called camel case, and it makes hashtags readable at a glance, especially on mobile phones where text is smaller.

Avoid hashtags that create accidental words or meanings when you remove the # symbol. #SexuallyActiveCats might be a legitimate hashtag for a veterinary clinic, but it reads differently without the symbol. Think about how your hashtag looks when someone types it, shares it, or sees it in a list.

Test your hashtag by typing it into a document and reading it without the # symbol. Does it still make sense? Does it say what you intend? If you have any doubt, choose a different one.

Launch your hashtag with a small group first

Do not announce your hashtag to thousands of people on day one. Instead, test it with a small group — your team, your close followers, or a group of people who understand what you are trying to build. Ask them to use the hashtag on a few posts and tell you if it feels natural or awkward.

This test run shows you whether people can remember the hashtag, whether they use it correctly, and whether it actually groups related posts together the way you intended. If people consistently misspell it or forget it, you will know before you invest time and money in promoting it.

A test run also gives you a chance to see how the hashtag looks in context. Does it fit naturally into captions? Does it make sense alongside other hashtags? Does it feel forced? Adjust based on what you learn before you go wider.

Use your hashtag consistently and show others how

Once you launch, use your hashtag on every relevant post. If you create a hashtag for your small business, put it on product announcements, behind-the-scenes content, customer spotlights, and anything else related to your brand. Consistency is how a hashtag grows. One post with your hashtag is invisible. Fifty posts with your hashtag becomes a destination.

Show other people how to use it. In your captions, explain what the hashtag is for. "Use #SmallBizLocal to share your favorite local business" is clearer than just dropping the hashtag with no context. When people understand the purpose, they are more likely to use it correctly and to encourage others to do the same.

Repost or share content that uses your hashtag. When someone else uses your hashtag, acknowledge it. This shows them that the hashtag is active, that people are paying attention, and that using it matters. That encourages more people to use it.

Monitor your hashtag and adjust if needed

Check regularly how many posts are using your hashtag and what people are posting. On Instagram, you can tap the hashtag and see the total number of posts and watch new ones come in. On TikTok, you can see the view count for the hashtag page. On Twitter and LinkedIn, search the hashtag and see what conversations are happening.

If your hashtag is growing, keep doing what you are doing. If it is stalling, you may need to promote it more actively, use it more consistently yourself, or ask your audience directly to use it. If it is being used for something you did not intend, you may need to clarify its purpose or create a new hashtag alongside it.

A hashtag is not a set-it-and-forget-it tool. It lives or dies based on whether people use it. Your job is to make it worth using and to keep showing people why they should.

Frequently Asked Questions

Can I use someone else's hashtag for my campaign?

Yes, but understand that you do not own it and cannot control how others use it. If the hashtag already has an established meaning, your posts will mix with unrelated content. It is better to create your own hashtag so you own the space and can build community around it specifically.

How many hashtags should I use on each post?

On Instagram, 20 to 30 hashtags is standard and does not hurt your reach. On TikTok, 3 to 5 is typical. On Twitter and LinkedIn, 1 to 3 works best because too many look spammy. Check what your competitors are doing on each platform and match that pattern.

What if my hashtag gets used for something I did not intend?

If a few people use it differently, that is normal and usually harmless. If it becomes a widespread problem, you can create a new hashtag and gradually shift your audience to it. You cannot stop people from using a hashtag, but you can steer your own content toward a new one.

Do hashtags work the same way on every platform?

No. Instagram and TikTok rely heavily on hashtags for discovery. Twitter and LinkedIn use them but weight them less. Facebook barely uses hashtags at all. Create your hashtag strategy based on where your audience actually is and how they search for content on that platform.

How long does it take for a hashtag to catch on?

There is no fixed timeline. Some hashtags gain traction in weeks if they tap into something people already care about. Others take months of consistent use. The more you use it, the more you encourage others to use it, and the more visible it becomes, the faster it grows.