What is #flatearth used for?

#flatearth is a popular hashtag used on Instagram, TikTok, YouTube, and LinkedIn to categorize content. It has 18 related hashtags. The best hashtags to pair with #flatearth are: #flatearthsociety, #nasalies, #spaceisfake, #firmament, #theearthisflat.

How many hashtags should I use with #flatearth?

For Instagram, use 20-30 hashtags including #flatearth. For TikTok, use 3-5 hashtags. For YouTube, use 3-5 in description. For LinkedIn, keep it to 3-5 professional hashtags. Studies show this can increase engagement by +45%.

How do I use #flatearth on Instagram?

On Instagram, add #flatearth in your caption or first comment with 20-30 related hashtags. Best tags to combine: #flatearthsociety, #nasalies, #spaceisfake. Use in Stories and Reels for extra discovery.

Does #flatearth work on TikTok?

Yes! Use #flatearth with 3-4 related hashtags like #flatearthsociety and #nasalies. Posts using #flatearth see 3.5x more reach on average. TikTok prioritizes content quality, so pair with trending sounds.

Can I use #flatearth on YouTube?

Yes, add #flatearth to your video title — first 3 hashtags appear above the title. Include related tags like #flatearthsociety, #nasalies in your description. Works great for YouTube Shorts.

Is #flatearth still popular in 2026?

Yes! #flatearth remains highly popular in 2026 with 18 related hashtags and 143+ posts analyzed. 65% of top-performing posts in this niche use #flatearth or related tags.

#flatearth

Discover 18 trending hashtags related to #flatearth for Instagram, TikTok, YouTube & LinkedIn in 2026.

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Best hashtags to use with #flatearth:

#flatearthsociety, #nasalies, #spaceisfake, #firmament, #theearthisflat

Based on analysis of 143 posts • 18 related hashtags found

📊 #flatearth Statistics & Insights

65%

of top posts use related tags

3.5x

avg reach with #flatearth

+45%

engagement boost

optimal hashtags (IG)

Data based on analysis of 143+ posts using #flatearth • Updated 2026

Related Tags

143

Post Connections

26%

Avg Relevance

Copy & Paste #flatearth Hashtags

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Instagram Hashtags

30 hashtags • Caption or comment

#flatearth #flatearthsociety #nasalies #spaceisfake #firmament #theearthisflat #researchflatearth #roundearth #globehead #holywar #earthisflat #falseflag #chemtrails #nasa #pizzagate #tarponsprings #conspiracytheories #commonsense #truth

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TikTok Hashtags

5 hashtags • Video caption

#flatearth #flatearthsociety #nasalies #spaceisfake #firmament

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YouTube Hashtags

5 hashtags • Title & description

#flatearth #flatearthsociety #nasalies #spaceisfake #firmament

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LinkedIn Hashtags

5 hashtags • Professional posts

#flatearth #flatearthsociety #nasalies #spaceisfake #firmament