Hashtag Generator for Instagram, TikTok & Reels

Hashtags are still the cheapest form of free advertising on social media. A single well-chosen hashtag can place your post in front of thousands of people who have never heard of you — no ad budget required. But most creators either use too few, too many, or the wrong ones entirely. This guide walks you through exactly how to research, choose, and place hashtags for Instagram, TikTok, YouTube, LinkedIn, and X, and our free generator above does the research for you in seconds.

How to Use the Hashtag Generator

1. Enter your topic: Type one or two words that describe your post — for example "fitness", "travel", or "handmade jewelry". You can also click one of the quick-pick chips.
2. Pick your platform: Choose Instagram, TikTok, YouTube, LinkedIn, or Twitter/X. The generator adjusts the mix because each platform rewards different hashtag behavior.
3. Choose how many tags: Select 10, 15, 20, or 30 hashtags depending on the platform's best practices (explained below).
4. Generate and review: Click "Generate Hashtags". Topic-specific tags appear first, blended with high-reach generic tags.
5. Copy and paste: Use "Copy All Hashtags" to grab the full set, or click any individual chip to copy a single tag. Paste them into your caption.

Hashtag Strategy: How Many Should You Actually Use?

The "3 to 5 vs. 30" debate never dies, so here is the honest answer: it depends on the platform. Instagram officially allows up to 30 hashtags per post, and data consistently shows that posts using 8 to 15 relevant hashtags outperform posts using 1 or 2 — as long as every tag is genuinely relevant. The winning formula is a size mix: 2 to 3 large tags (1M+ posts) for reach, 4 to 6 medium tags (50K–500K posts) for realistic ranking, and 3 to 5 niche tags (under 50K posts) where your post can actually hit the "Top Posts" section.

TikTok is the opposite game. Its recommendation engine is driven by watch time and engagement, not hashtags, so stuffing 20 tags helps nothing. Use 3 to 5 hashtags: 1 to 2 topic tags, 1 discovery tag like #fyp or #foryoupage, and 1 to 2 niche community tags. YouTube is stricter still — you can add up to 15, but only the first 3 appear above your video title, so those three must be your best. LinkedIn rewards 3 to 5 professional tags, and X works best with just 1 to 2.

Where to Place Your Hashtags

On Instagram, hashtags work identically whether they sit in the caption or the first comment — the algorithm indexes both. The practical difference is editing: captions can be edited anytime, while a first comment is fixed once posted. The cleanest approach is to put 3 to 5 hashtags at the bottom of your caption, separated from your message by a few line breaks. This keeps your caption readable while giving the algorithm everything it needs. Our full breakdown lives in Should Hashtags Go at the Bottom of the Caption?, and you can format those line breaks perfectly with our Caption & Line-Break Formatter.

Platform-by-Platform Hashtag Differences

Instagram is a hashtag-native platform: tags power topic feeds, the Explore page, and search. Rotate 2 to 3 hashtag sets so you are not pasting the identical block on every post. TikTok treats hashtags as light signals — relevance and watch time matter far more, so keep it tight and topical. YouTube hashtags appear above the title and help Google categorize the video; spammy or excessive tags can actually get your video removed from search, so stay under 15 and keep them relevant. LinkedIn hashtags follow you into the professional feed and company pages; generic tags like #innovation travel far, but niche industry tags convert better. X (Twitter) uses hashtags for trending topics and events — 1 to 2 per tweet is the sweet spot, and piggybacking on trending event tags during live moments drives the biggest spikes.

Common Hashtag Mistakes to Avoid

First, banned hashtags: Instagram maintains a list of flagged tags (some surprisingly innocent-looking) that silently kill a post's reach — never use a tag without checking it still resolves in search. Second, irrelevant trending tags: slapping #love on a B2B software post confuses the algorithm and attracts the wrong audience. Third, repeating the identical set on every post, which platforms increasingly treat as spam behavior. And fourth, follow-for-follow bait tags like #follow4follow — they attract bots, not customers. Pair your cleaned-up hashtag sets with a styled bio using our Fancy Text Generator, and read our deep-dive Social Media Hashtag Guide for advanced research tactics.