#21 — Instagram Hashtag Analysis

With 2.1B total posts and 308.6K new posts daily, #21 is a very high-competition hashtag (score: 100/100). Average posts get 706 likes and 10 comments.

Popular Hashtags for #21

Hashtag	Posts	Daily	Avg Likes	Competition	Reach
#love	2.1B	308.6K	706	100	28
#instagram	1.6B	606.9K	655	100	34
#explorepage	638.9M	651.0K	1.4K	100	32
#viral	1.1B	1.0M	542	100	36
#instagood	2.0B	377.0K	846	100	48

Related Hashtags to #21

Hashtag	Posts	Daily	Avg Likes	Competition	Reach
#photooftheday	1.1B	33.4K	1.7K	100	48
#tbt	590.0M	14.8K	719	100	43
#like4like	476.4M	13.6K	777	100	38
#21challenge	72.3K	102	2.6K	77	38
#birthday	173.0M	22.9K	981	100	64

Similar Hashtags to #21

Hashtag	Posts	Daily	Avg Likes	Competition	Reach
#2021	50.4M	368	2.1K	100	55
#century21	2.4M	735	4.2K	100	68
#amit_sharma9721	349.9K	323	1.8K	84	69
#w221	691.6K	692	2.7K	92	58
#w210	798.9K	286	2.7K	95	56

Hashtag Cloud

#fyp #reels #explore #1 #20 #22 #19 #18 #2 #11 #10 #23 #photography #12 #17 #21stbirthday #13 #15 #trending #happybirthday #3 #16 #14 #24 #art #fun #7 #5 #fashion #25 #foryou #4 #9 #8 #birthdaygirl #6 #blackjack #reelsinstagram #2024 #party #casino #funny #30 #photo #music #model #poker #happy #shorts #slot #cake #like #followforfollowback #gamble #gatesofolympus #21savage #motivation #bj #follow #maxwin #style #rulet #fitness #instadaily #trendingreels #birthdaycake #beauty #football #pragmatic #26 #27 #smallbusiness #fypシ #life #kesfet #ezugi #daily #pragmaticplay #bigbasbonanza #fy #ootd #family #viralreels #pokeronline #beautiful #photographer #lifestyle #28 #pink #travel

How to Use #21 on Instagram

Mix with niche hashtags — #21 has very high competition. Combine it with smaller, more specific hashtags to improve your visibility.
Use 5-15 hashtags per post — Include #21 alongside related tags for the best reach. Don't just use one hashtag.
Combine with related hashtags — Try pairing #21 with #photooftheday, #tbt, #like4like for a well-rounded hashtag set.
Check for banned hashtags — Always verify your hashtags are safe before posting. Use the IQHashtags Banned Hashtag Checker.

Frequently Asked Questions

How popular is #21 on Instagram?

#21 has 2.1B total posts on Instagram with approximately 308.6K new posts added daily. The average post using #21 receives 706 likes and 10 comments.

Is #21 a good hashtag to use?

#21 has a competition score of 100/100 (very high) and a reach score of 28/100. This is a competitive hashtag — best used alongside smaller, niche-specific tags.

What hashtags go well with #21?

The best hashtags to use with #21 include: #photooftheday, #tbt, #like4like, #21challenge, #birthday. Using a mix of related hashtags helps you reach a wider audience while staying relevant to your content.

Editorial transparency: This article was drafted with AI assistance using IQ Hashtags' internal platform data and research, then reviewed and edited for accuracy by Ewa Suwińska, Editorial Lead at IQ Hashtags. Last reviewed: 2026-06-04. Learn about our editorial process →

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