Hashtags on TikTok are not fuel for the car — they are road signs. Using hashtags like #fyp or #explore is like writing "Planet Earth" as the address on a letter you want to send to your neighbour down the street. Choose 3 or 4 hashtags that precisely describe what the viewer will see in the first 3 seconds, and let the algorithm guide your ideal audience to you.
To understand how hashtag choice affects algorithm signals, read TikTok algorithm signal priority. And for how TikTok's shift to a search engine changes everything about hashtag strategy, read how TikTok has changed.
TikTok hashtags as classification tools, not direct view boosters
The fundamental concept that changes everything: hashtags do not directly bring views — they tell the algorithm who to direct your video to.
- The right hashtag: places your video in front of a genuinely interested audience → engagement and completion rate rise → distribution expands
- The wrong hashtag: places you in front of a disinterested audience → they leave early → the algorithm stops distribution
Views are the result — hashtags are one of the causes. And the difference between two hashtag strategies can be 152 times in the final outcome.
Right hashtags vs random ones: 420 vs 64,000 views — same video
A "digital marketing and startup building" account published two identical videos on the same day — one change only: the hashtags.
| Metric | Random million-view hashtags (#fyp #viral #explore) | Targeted hashtags (#digital_marketing #startups #brand_building) |
|---|---|---|
| Retention at second 3 | 14% | 69% |
| Views | 420 | 64,000 |
| New followers | 0 | 1,800 targeted followers interested in paid services |
Total gap: 152x — caused by hashtags alone. Why? Because the mass hashtags sent the video to a disinterested audience, retention collapsed, and the algorithm stopped distribution after the first test wave.
The optimal hashtag count: 15 vs 4 — the numbers
Analysis of an account posting consistently in the same niche with only the hashtag count varying:
| Number of hashtags | Average views | What the algorithm does |
|---|---|---|
| 15 hashtags | 3,000 | Treats it as scattered content — sends to a random, unfocused test sample |
| 8 hashtags | 11,000 | Better but still mixed signals dilute topic classification |
| 4 precise hashtags | 28,000 | Clear targeting + filtered test sample + wider distribution |
The proven optimal number: 3 to 5 hashtags. This is also confirmed by data from CapCut, ByteDance's official editor, which explicitly states that 3–5 hashtags produce the best results.
Why #fyp and #viral hurt more than they help
#fyp contains trillions of views and millions of videos uploaded every minute. When you add it, you ask the algorithm to inject your clip into a test sample mixing people interested in cooking, cars, and gaming all at once. Most leave in the first two seconds, retention collapses, and the algorithm stops distribution.
These hashtags do not directly penalise your account — but they waste the only opportunity you have in the first test phase. The algorithm gains zero useful classification information from #fyp because every video wants to go to the FYP — it is the equivalent of no information at all.
No hashtags vs targeted hashtags: who wins on TikTok?
Same quality, same hook — a direct comparison published in the same niche:
- No hashtags: 12,000 views. TikTok is smart enough to understand content through its speech-to-text and visual recognition AI — but it takes longer to find the right test sample
- Targeted hashtags: 65,000 views. They did not multiply views magically — they accelerated spread speed by 3 times by giving the algorithm a ready code to skip the guessing phase and push directly to the right niche
The conclusion: hashtags do not make a video good — but they determine how fast it reaches the right audience.
Hashtags as permanent SEO: 35% of your views arriving months later
TikTok has officially become a search engine competing for the new generation's attention — and this completely changed the hashtag's function:
| Before | Now | |
|---|---|---|
| Hashtag function | Chasing temporary trends and challenges | Permanent folder in TikTok's search database |
| View source | 100% from the FYP only | 65% FYP + 35% sustained internal search |
| Video lifespan | 48 hours then gone | Continues bringing viewers for months |
Videos using hashtags built around "words people actually search for" (like #bestiPhonecharger instead of just #iPhone) achieve 35% of their views long-term from the search bar — days or months after publishing. The right hashtag is a long-term investment, not just a temporary push.
The Macro/Micro/Problem engineering formula for optimal hashtags
Every video needs three levels of hashtags aligned with the size of the intended audience:
| Hashtag type | Ideal view size | Recommended count | Example (tech niche) | Example (fitness niche) |
|---|---|---|---|---|
| Main niche (Macro) | Above 50 million | 1 only | #technology | #fitness |
| Sub-specialisation (Micro) | 1 to 10 million | 1 to 2 | #artificialintelligence | #homeworkout |
| Specific problem | Below 500,000 | 1 only | #summarizearticleswithAI | #absworkoutforbeginners |
The lower-view hashtag is not weak — it is the most precise. And precision = interested audience = higher completion = wider distribution.
The golden 4-hashtag strategy
| Hashtag type | Count | Example (cooking niche) | Purpose |
|---|---|---|---|
| Broad niche | 1 | #cooking or #recipes | Identifies the main category in the platform's classification |
| Sub-niche | 1 to 2 | #nodesserts | Narrows competition and reaches people with a specific need |
| Direct keyword | 1 | #cheesecake | Targets exactly what people search for |
| Account identity (optional) | 1 | #youraccountname | Archives your videos and makes navigation between them easy |
The mandatory three-line caption rule: hashtags are not everything
Do not write hashtags alone as a dead wall at the end of your caption. The highest-performing videos follow this structure:
- Line one: a natural description containing the primary keyword written the way people actually search for it
- Line two: a sentence that clarifies the benefit or poses the question the video answers
- Line three: the three or four targeted hashtags as a final semantic lock
The reason: TikTok's AI transcribes your spoken audio automatically and matches it against the written caption text — the more your caption matches what you say in the video, the faster and more accurate the topic classification.
Frequently asked questions
Does #fyp actually increase TikTok views?
No — #fyp does not increase views; it wastes them. This hashtag sends your video to a random test sample of people interested in completely unrelated topics, which collapses retention and triggers the algorithm to stop distribution. The algorithm gains zero useful classification information from #fyp because every video wants to go to the FYP — it occupies a classification slot while providing nothing in return.
How many hashtags should you use on TikTok?
3 to 5 precise hashtags is the proven optimal number. More than that and the algorithm treats the video as scattered content with unfocused classification. The documented gap: 15 hashtags average 3,000 views, while 4 precise hashtags average 28,000 views for the same type of content — a 9x difference from hashtag count alone.
Can you post on TikTok without hashtags?
Yes — TikTok understands content through speech-to-text and visual recognition AI even without hashtags. But targeted hashtags accelerate reach by 3 times by giving the algorithm a ready classification code that skips the guessing phase. The documented difference: no hashtags = 12,000 views versus targeted hashtags = 65,000 views in the same experiment.
Are lower-view hashtags better than popular ones on TikTok?
Yes in most cases — a hashtag with fewer than 500,000 views means less competition and a more specifically interested audience. The optimal strategy combines one large-scale hashtag (50+ million), one mid-range hashtag (1–10 million), and one small, specific hashtag (below 500,000). This three-level distribution gives the most accurate classification and the most interested initial test sample.
Should you change your TikTok hashtags for every video?
Yes — hashtags should change with every video based on its specific topic, not based on what performed well in the previous video. Two videos in the same niche with different specific subjects may need completely different hashtags. The one exception: your account identity hashtag can remain constant across all videos to archive your content and make navigation easier for returning viewers.
3 or 4 precise hashtags outperform 20 random ones every time — because the goal is not quantity but targeting accuracy. If your views remain low even after improving your hashtags, read why do my TikTok videos get no views? For the complete picture on the platform, read the complete TikTok guide.