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BT21 engagement report

@BT21_ - 13M followers on X

Measured over 8 original posts from a 30-day window, last computed on October 7, 2026.

Engagement

Middle of its size range
Per follower
0.089%
of 13M followers
Per impression
5.39%
208K views on a typical post
Reach
1.65%
of its followers see a post
Typical post
11K
interactions (median)
Saved
0.144%
299 bookmarks on a typical post
Posting rate
0.37/day
active 33% of days
Peak time
07:00 UTC
Tuesday

A typical post picks up 11K interactions against 13M followers, an engagement rate of 0.089%. Measured over 8 original posts, its engagement rate beats 71% of 15,519 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 208K times each, and 5.39% of those impressions turn into an interaction. That is about 1.65% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.37 posts a day over the last 30 days, though only 33% of days saw any activity at all. Most posts go out around 07:00 UTC, and Tuesday is the busiest day of the week. Of the 8 posts sampled, 100% carry an image or video. The account's strongest tracked post pulled 58K interactions, about 5.2x its own typical post. Recurring topics include #bt21, #mang, #rj.

Measured over 8 original posts from a 30-day window, last computed on October 7, 2026. Recurring tags: #bt21, #mang, #rj.

Compared with accounts its own size

BT21's engagement rate beats 71% of the tracked X accounts closest to it in follower count (15,519 accounts, accounts of similar size (decile 10 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.

On engagement per impression rather than per follower it beats 92% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.

Where this sits in the catalog

At 0.089%, BT21 sits above the 25th percentile of the 155,901 accounts in this comparison. That places it in the below the median band, which runs 0.022% to 0.127%.

p100.003%
p250.022%
p50 (median)0.127%
p750.604%
p902.32%
p9983.3%
Engagement rate as a share of followers, across the 155,901 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 26,040 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.003%
25th percentile0.022%
50th percentile0.127%
75th percentile0.604%
90th percentile2.32%
99th percentile83.3%

This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built

Posting timing

This account posts most often around 07:00 UTC, and Tuesday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 07:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 111%Busiest hour: 07:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
00:00 UTC-1%89K
01:00 UTC-2%90K
02:00 UTC-3%88K
03:00 UTC-4%94K
04:00 UTC-5%76K
05:00 UTC-4%75K
06:00 UTC-5%86K
07:00 UTC-5%93K
08:00 UTC-4%108K
09:00 UTC-4%124K
10:00 UTC-3%129K
11:00 UTC-3%141K
12:00 UTC-3%154K
13:00 UTC-3%167K
14:00 UTC-4%173K
15:00 UTC-2%176K
16:00 UTC-3%171K
17:00 UTC-3%159K
18:00 UTC-2%149K
19:00 UTC-2%141K
20:00 UTC-1%131K
21:00 UTC0%116K
22:00 UTC-2%100K
23:00 UTC-1%90K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Tuesday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 111%Busiest day: Tuesday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%393K
Monday+1%483K
Tuesday-2%520K
Wednesday-3%472K
Thursday-2%430K
Friday-3%447K
Saturday+2%393K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

Formats this account uses

Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.

This account's posting mix compared with catalog-wide effects
FormatThis accountCatalog effect95% intervalAccounts behind it
Image or video100% of posts+111%+108% to +115%34K
Outbound link0% of posts-41%-42% to -40%32K
Typical length--3%-3% to -2%54K
  • 100% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
  • 0% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
  • Its average post runs 162 characters, which falls in the 80 - 180 characters band. Across the catalog, posts of 80 to 180 characters run 3% below the same accounts' other posts.

These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.

Best tweets

  • Sep 1, 20265.2x their median

    Todayโ€™s special star, COOKY ๐Ÿ’–๐ŸŒŸ ไปŠๆ—ฅใฎใ‚นใƒšใ‚ทใƒฃใƒซใชไธปไบบๅ…ฌใ€COOKY๐Ÿ’–๐ŸŒŸ ์˜ค๋Š˜์˜ ํŠน๋ณ„ํ•œ ์ฃผ์ธ๊ณต, COOKY ๐Ÿ’–๐ŸŒŸ #BT21 #COOKY #HAPPYCOOKYDAY https://t.co/HW5qdFucpZ

    44K14K12887444K viewsView on X
  • Sep 12, 20263.3x their median

    Wait... I havenโ€™t made my wish yet... ๐Ÿ’ญ ใกใ‚‡ใกใ‚‡ใกใ‚‡...ใพใ ้ก˜ใ„ใ“ใจใ—ใฆใชใ„ใฎใซ...๐Ÿ’ญ ์ž ๊น๋งŒ... ๋‚˜ ์•„์ง ์†Œ์› ๋ชป ๋นŒ์—ˆ๋Š”๋ฐ... ๐Ÿ’ญ #BT21 #KOYA #HAPPYKOYADAY https://t.co/y0Jpep58qh

    28K8.9K6748332K viewsView on X
  • Jul 9, 20263.2x their median

    With love, for you VAN ๐Ÿ’Œ๐ŸŽ VANใธใ€ๆ„›ใ‚’่พผใ‚ใฆ๐Ÿ’Œ๐ŸŽ ์‚ฌ๋ž‘์„ ๋‹ด์•„, VAN์—๊ฒŒ ๐Ÿ’Œ๐ŸŽ #BT21 #KOYA #RJ #SHOOKY #MANG #CHIMMY #TATA #COOKY #VAN https://t.co/rT71qbuTeW

    27K8.1K159254489K viewsView on X
  • Jun 4, 20263.1x their median

    Knock knock! Surprise at the door! ๐Ÿšช๐ŸŽ ใ‚ณใƒณใ‚ณใƒณ๏ผๆ‰‰ใฎๅ‘ใ“ใ†ๅดใซใƒ—ใƒฌใ‚ผใƒณใƒˆใŒใ‚ตใƒ—ใƒฉใ‚คใ‚บๅˆฐ็€๏ผ๐Ÿšช๐ŸŽ ๋˜‘๋˜‘! ๋ฌธ ์•ž์— ๊นœ์ง ์„ ๋ฌผ ๋„์ฐฉ! ๐Ÿšช๐ŸŽ #BT21 #FrontDoor https://t.co/7aev3BQH38

    28K6.1K72392729K viewsView on X
  • May 14, 20261.8x their median

    SHOOKYโ€™s happiness is all that matters! ๐Ÿ˜๐ŸคŽ SHOOKYใŒใƒใƒƒใƒ”ใƒผใชใ‚‰ๅ…จ้ƒจใ‚ชใƒผใ‚ฑใƒผ๏ผ๐Ÿ˜๐ŸคŽ SHOOKY๋งŒ ํ–‰๋ณตํ•˜๋ฉด ๋์–ด! ๐Ÿ˜๐ŸคŽ #BT21 #SHOOKY #Prankster https://t.co/XVd7Mr8Vzr

    23K5.3K49200316K viewsView on X
  • Aug 11, 20262.3x their median

    Aaaah~~~~~~~~~~ ๐Ÿ’จ๐Ÿคฉ ใ‚"ใใใ‚ใใใ€œใ€œใ€œใ€œใ€œใ€œใ€œใ€œ ๐Ÿ’จ๐Ÿคฉ ์•„ใ…ใ…ใ…~~~~~~~~~~ ๐Ÿ’จ๐Ÿคฉ #BT21 #SHOOKY #TATA https://t.co/9MefM2dVTr

    21K4.6K62195367K viewsView on X
  • May 26, 20262.2x their median

    Too cute to run past COOKY... ๐Ÿ’˜ COOKYใŒใ‚ใกใ‚ƒใ‹ใ‚ใ„ใใฆ่ฟฝใ„ๆŠœใ‹ใ›ใชใ„...๐Ÿ’˜ COOKY๊ฐ€ ๋„ˆ๋ฌด ๊ท€์—ฌ์›Œ์„œ ๋ชป ์ง€๋‚˜์น˜๊ฒ ์–ด... ๐Ÿ’˜ #BT21 #TATA #COOKY #Running https://t.co/IQyImh9UCh

    20K4.9K60155226K viewsView on X
  • May 5, 20261.8x their median

    Wait, is this real? ...๐Ÿ‘€ ใ‚ใ‚Œใฏ....ใƒžใ‚ธ๏ผŸ...๐Ÿ‘€ ์ž ๊น, ์ด๊ฑฐ ์ง„์งœ์•ผ? ...๐Ÿ‘€ #BT21 #TATA #CHIMMY #Sunglass https://t.co/nsBXJ3gyDv

    19K4.3K65149622K viewsView on X
  • Sep 22, 20261.9x their median

    Wait... why do the cookies keep disappearing? ๐Ÿ‘€๐Ÿช ใ‚ใ‚Œ...ใชใ‚“ใงใ‚ฏใƒƒใ‚ญใƒผใŒใฉใ‚“ใฉใ‚“ๆถˆใˆใฆใ„ใใ‚“ใ ใ‚๏ผŸ๐Ÿ‘€๐Ÿช ์ž ๊น... ์ฟ ํ‚ค๊ฐ€ ์™œ ์ž๊พธ ์—†์–ด์ง€์ง€? ๐Ÿ‘€๐Ÿช #BT21 #KOYA #RJ #SHOOKY #MANG #CHIMMY #TATA #COOKY #Cookie https://t.co/B5jXd9nUFU

    18K3.9K86261455K viewsView on X
  • Jul 21, 20261.9x their median

    Kept eatingโ€ฆ and accidentally made some art! ๐Ÿ˜†๐Ÿ‰ ้ฃŸในใฆใŸใ‚‰...ใ„ใคใฎ้–“ใซใ‹ไฝœๅ“ๅฎŒๆˆ๏ผ๐Ÿ˜†๐Ÿ‰ ๋จน๋‹ค ๋ณด๋‹ˆโ€ฆ ์–ด๋А์ƒˆ ์ž‘ํ’ˆ์ด ์™„์„ฑ! ๐Ÿ˜†๐Ÿ‰ #BT21 #SHOOKY #TATA #COOKY #Watermelon https://t.co/QJy3qgdg37

    17K3.9K4595390K viewsView on X

Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.

Recurring topics

#bt21#mang#rj#cooky#koya

The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.

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Reading these numbers

A typical post picks up 11K interactions against 13M followers, an engagement rate of 0.089%. Measured over 8 original posts, its engagement rate beats 71% of 15,519 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 208K times each, and 5.39% of those impressions turn into an interaction. That is about 1.65% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.37 posts a day over the last 30 days, though only 33% of days saw any activity at all. Most posts go out around 07:00 UTC, and Tuesday is the busiest day of the week. Of the 8 posts sampled, 100% carry an image or video. The account's strongest tracked post pulled 58K interactions, about 5.2x its own typical post. Recurring topics include #bt21, #mang, #rj.

What is BT21's engagement rate on X?
BT21 (@BT21_) has an engagement rate of 0.089%, based on the median interactions across 8 original posts from the last 30 days against 12,599,878 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.089%, BT21 sits above the 25th percentile of the 155,901 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
Does @BT21_ have real engagement?
Its engagement rate beats 71% of the tracked X accounts closest to it in follower count (15,519 accounts), which puts it in the middle of its size range group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
When does @BT21_ post?
Most posts go out around 07:00 UTC, and Tuesday is its busiest day, at roughly 0.37 posts per day across the measured window.

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