TikTok Hashtag Research: How to Find Hashtags That Actually Work (2026)

Hashtags still shape how TikTok categorizes and distributes content. But stuffing in random trending tags hurts more than it helps. Here's how to do real hashtag research — by reach, relevance, and who's already winning the tag.

Do hashtags still matter on TikTok?

Yes — just not the way people think. Hashtags help TikTok understand what your video is about and which audiences to test it on. The winning strategy in 2026 is a small set of relevant tags (a mix of broad and niche) rather than a wall of generic ones like #fyp.

What to look for in a hashtag

• Total reach — how many cumulative views the tag has. Huge tags are competitive; mid-size tags are easier to rank in.
• Top posts — what's actually performing under the tag, and in what format.
• Related hashtags — tags frequently used alongside it, to widen distribution.
• Top creators — who owns the conversation, so you can study or partner with them.

Research any hashtag for free

Our free TikTok Hashtag Analytics tool gives you all of that in one place: enter any hashtag and see its total views and video count, the top-performing posts, related hashtags you can click straight into, and the creators driving the tag.

Pull hashtag data with the TikTok API

To build hashtag research into your own workflow, two endpoints do the job. Look up the hashtag with /challenge/info, then fetch its videos with /challenge/posts. With a free API key:

import requests

BASE = "https://api.tiktokapi.store/api/v1"
headers = {"Authorization": "Bearer YOUR_API_KEY"}

info = requests.get(f"{BASE}/challenge/info",
    headers=headers, params={"challenge_name": "booktok"}
).json()["data"]["challenge_info"]

cid = info["challenge"]["id"]
print("Total views:", info["stats"]["viewCount"])

videos = requests.get(f"{BASE}/challenge/posts",
    headers=headers, params={"challenge_id": cid, "count": 30}
).json()["data"]["videos"]

top = max(videos, key=lambda v: v["play_count"])
print("Top post views:", top["play_count"])

From here you can track a tag over time, surface trending posts, or discover creators — the foundation of any trend-intelligence tool. Full reference in the API documentation.

Put it together

• Mix one or two broad tags with several niche ones.
• Mine related hashtags from the tool to expand reach without going generic.
• Study the top creators ranking for your target tags.