title: How to Find Trending Hashtags Before They Go Mainstream description: Learn how to spot trending hashtags early — before they peak and saturate. Four free methods used by top creators to find rising hashtags in 2026. slug: find-trending-hashtags-early date: April 4, 2026 author: PostWave Team category: Hashtag Strategy
readTime: 8 min read
How to Find Trending Hashtags Before They Go Mainstream
Last updated: April 2026
The difference between using a hashtag when it's rising and using it when it's peaked is often the difference between 3,000 views and 300. Trending hashtags go through a predictable lifecycle: discovery by a small group of early adopters, rapid growth as more creators pile in, a peak where competition makes visibility impossible, and then slow decline.
If you can find a hashtag in the first two stages — before it shows up in every "best hashtags" list — you have a real advantage. This guide covers four free methods to find trending and emerging hashtags before they go mainstream.
Why Timing Matters With Hashtags
When a hashtag is new and growing, the bar to appear in "Top Posts" for that tag is much lower. A post with 200 likes can trend for a new hashtag with 50K posts. That same post would never appear in Top Posts for #fitness (500M posts) or #travel (683M posts) — it would be buried instantly.
The strategic play: find hashtags in the 100K–2M post range that are growing, use them consistently for 2–4 weeks, build up your visibility in that tag, and ride the wave as the hashtag grows. By the time the tag has 10M posts, you've already established a presence.
This is how smaller accounts break out without paid promotion.
Method 1 — TikTok's Discover Page (Free, Real-Time)
TikTok's Discover page (the search magnifying glass icon) shows trending hashtags in real time. This is arguably the best free tool for spotting emerging trends because:
TikTok trends travel to Instagram with a 2–4 week lag. A hashtag that's just starting to grow on TikTok will typically arrive on Instagram Reels about 2–3 weeks later. If you spot it on TikTok now and start using it on Instagram immediately, you get in early.
How to use it:
- Open TikTok app → tap the Search icon
- Scroll through the trending hashtags section
- Note any hashtags with 5M–50M views that you haven't seen widely used yet
- Check if those hashtags have any Instagram presence yet (search on IG)
- If IG posts are under 500K, you're early
Focus on hashtags relevant to your niche. A food creator doesn't need to care that #dancechallenge is trending — but if you spot #streetfoodchallenge trending on TikTok with 3M views and only 80K posts on Instagram, that's an opportunity.
Method 2 — Instagram's Search Suggestions
Instagram's own search bar auto-suggests hashtags based on your search term. These suggestions aren't alphabetical — they're ranked by a combination of relevance and current activity. Tags that appear in the suggestions but have fewer posts than you'd expect are often newly trending.
How to use it:
- Open Instagram → tap Search
- Type your main niche keyword (e.g., "travel", "food", "fitness")
- Look at the hashtag suggestions and their post counts
- Click on any tag with a count that seems low relative to how active the topic feels
- Look at the Recent Posts tab — if posts are coming in frequently and getting decent engagement, the tag is growing
Check the "Related" hashtags at the top of any hashtag page. Instagram shows you hashtags that the algorithm associates with the one you searched. These are often newer variations that share an audience.
Method 3 — PostWave's New Hashtags Page
Our new hashtags page is updated weekly and lists emerging hashtags gaining traction in each category. This is curated specifically for Instagram and TikTok creators, covering niches relevant to Indian creators including food, fashion, travel, and fitness.
The advantage of a dedicated page: rather than searching manually across Instagram and TikTok, you get a filtered list of hashtags that are actively growing right now, before they become mainstream.
Bookmark this page and check it every Monday. The hashtags that appear in a given week are most effective to use in the following 2–3 weeks — before they're widely adopted.
Method 4 — Watch What Top Creators in Your Niche Are Using
The creators with 100K–500K followers in your niche are the ones most likely to be early adopters of new hashtags. They have enough reach to experiment and enough followers that their experiments get meaningful signals.
How to track them:
- Identify 5–10 creators in your niche with 100K–500K followers
- Check their last 10–15 posts and note which hashtags they're using
- Look for any hashtags consistently appearing across multiple posts that you haven't used before
- Search those hashtags on Instagram — if the post count is under 2M, it's potentially growing
Do this analysis once every 2 weeks. The hashtags that top creators adopt now are often the ones that go mainstream in the next 4–6 weeks.
What to Do When You Find a Rising Hashtag
Finding the hashtag is only half the equation. What you do with it determines whether you actually benefit.
Act within 48 hours. The early-mover advantage is real but short. Once a trend explodes, the opportunity window closes fast. If you find a hashtag on Monday, post with it by Wednesday.
Don't abandon your existing strategy. A rising hashtag should be added to your existing set, not replace it. Keep your proven niche tags and add 1–2 trending ones per post.
Create content that matches the trend, not just the hashtag. A trending hashtag used on irrelevant content gets flagged by the algorithm as spam and actively hurts your reach. The content must actually match what the hashtag represents.
Track whether it works. Check your Instagram Insights after each post. If a post using the new hashtag gets significantly more reach from hashtags than your usual average, you've found something worth using consistently for the next few weeks.
How Fast Trending Hashtags Saturate
Speed varies significantly by niche:
Viral/general content (e.g., #viral, #trending): These saturate within days. By the time you see them in a "trending hashtags" article, they're already over.
Niche-specific trends (e.g., #streetfoodchallenge, #yogaforweightloss): These take 3–6 weeks to go from emerging to saturated. This is where early-mover advantage is most valuable.
Seasonal trends (e.g., #diwalidecor, #iplhighlights): These follow predictable annual patterns. The optimal window is 1–2 weeks before the event, when searches are rising but competition hasn't peaked.
India-specific trends: Tend to saturate more slowly than global English-language trends. A tag like #mumbaifoodie grows more gradually than a global viral hashtag. This gives Indian creators a longer early-mover window than Western creators typically have.
Your Next Step
Start with Method 1 right now — open TikTok's Discover page and spend 10 minutes looking at trending hashtags in your niche. Note any tags with 5M–50M TikTok views that have under 500K Instagram posts. Those are your early opportunities.
For a weekly updated list of emerging hashtags, bookmark our New Hashtags page and our Hashtag Generator which shows you related tags for any topic you search.