BT21 Japan Official engagement report
@BT21_Japan - 3.5M followers on X
Measured over 24 original posts from a 30-day window, last computed on August 31, 2026.
Engagement
A typical post picks up 1.7K interactions against 3.5M followers, an engagement rate of 0.048%. Measured over 24 original posts, its engagement rate beats 73% of 3,774 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 98K times each, and 1.70% of those impressions turn into an interaction. That is about 2.84% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.2 post a day over the last 30 days, with activity on roughly 67% of days. Most posts go out around 07:00 UTC, and Monday is the busiest day of the week. Of the 24 posts sampled, 88% carry an image or video and 67% link out. The account's strongest tracked post pulled 10K interactions, about 6.2x its own typical post. Recurring topics include #bt21, #shooky, #tata.
Measured over 24 original posts from a 30-day window, last computed on August 31, 2026. Recurring tags: #bt21, #shooky, #tata.
Compared with accounts its own size
BT21 Japan Official's engagement rate beats 73% of the tracked X accounts closest to it in follower count (3,774 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 72% 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 0.048%, BT21 Japan Official sits above the 25th percentile of the 36,521 accounts in this comparison. That places it in the below the median band, which runs 0.012% to 0.08%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.002% |
| 25th percentile | 0.012% |
| 50th percentile | 0.08% |
| 75th percentile | 0.434% |
| 90th percentile | 2.10% |
| 99th percentile | 160.7% |
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 Monday 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.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 50K |
| 01:00 UTC | -2% | 51K |
| 02:00 UTC | -3% | 50K |
| 03:00 UTC | -4% | 53K |
| 04:00 UTC | -6% | 43K |
| 05:00 UTC | -4% | 42K |
| 06:00 UTC | -4% | 48K |
| 07:00 UTC | -5% | 52K |
| 08:00 UTC | -4% | 60K |
| 09:00 UTC | -3% | 69K |
| 10:00 UTC | -2% | 72K |
| 11:00 UTC | -3% | 78K |
| 12:00 UTC | -2% | 86K |
| 13:00 UTC | -2% | 94K |
| 14:00 UTC | -4% | 97K |
| 15:00 UTC | -2% | 100K |
| 16:00 UTC | -3% | 97K |
| 17:00 UTC | -2% | 90K |
| 18:00 UTC | -1% | 84K |
| 19:00 UTC | -2% | 79K |
| 20:00 UTC | -1% | 74K |
| 21:00 UTC | -1% | 66K |
| 22:00 UTC | -2% | 57K |
| 23:00 UTC | -2% | 51K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +4% | 230K |
| Monday | 0% | 286K |
| Tuesday | -2% | 276K |
| Wednesday | -1% | 251K |
| Thursday | -1% | 244K |
| Friday | -3% | 252K |
| Saturday | +3% | 227K |
Best tweets
- Jul 9, 20266.2x their median
VANへ、愛を込めて💌🎁 #BT21 #KOYA #RJ #SHOOKY #MANG #CHIMMY #TATA #COOKY #VAN https://t.co/ImGV5L0Fq0
- Jul 16, 20264.8x their median
わはは!これは逃せないでしょ!😆❤️🔥 ちょっと...!SHOOKYが飛んだ!!!🤩✨ 最高のチームプレイ!😎⭐️ #BT21 #KOYA #RJ #SHOOKY #MANG #CHIMMY #TATA #COOKY #VAN https://t.co/7qufRIRQeF
- Aug 11, 20264.7x their median
あ"ぁぁあぁぁ〜〜〜〜〜〜〜〜 💨🤩 #BT21 #SHOOKY #TATA https://t.co/sRDotjYf9S
- Jul 14, 20264.5x their median
Zzz… 誰かがそっと通り過ぎたような 👀🌃 #BT21 #KOYA #RJ #SHOOKY #MANG #CHIMMY #TATA #COOKY #VAN https://t.co/Wns5z6xB3E
- Jul 22, 20263.7x their median
食べてたら...いつの間にか作品完成!😆🍉 #BT21 #SHOOKY #TATA #COOKY #Watermelon https://t.co/oLTpZzzbkG
- Aug 13, 20263.7x their median
あれ?この角度で見るともっと可愛く見えるじゃん?!😆✨ #BT21 #RJ #SHOOKY #CHIMMY #Mirror https://t.co/NTQqN0tXyQ
- Jul 7, 20263.6x their median
あれ...ここに別のBT21がいる?!🧐💧 #BT21 #KOYA #RJ #SHOOKY #MANG #CHIMMY #TATA #COOKY #Rain https://t.co/yMpWIOKXJr
- Jul 2, 20263.5x their median
かっこよくキメるのは...思ったより難しい😎🌟 #BT21 #TATA https://t.co/HSK0tYbxo3
- Jun 23, 20263.5x their median
BT21のあま〜い夏!☀️ #BT21 #KOYA #RJ #SHOOKY #COOKY https://t.co/9Zu0HtrgL5
- Jul 28, 20263.5x their median
ユニスターズのみんな!この飲み物、どんな味だと思う?🤩💖 #BT21 #RJ #CHIMMY #COOKY #ASMR https://t.co/oIrebUhZ5X
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
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 1.7K interactions against 3.5M followers, an engagement rate of 0.048%. Measured over 24 original posts, its engagement rate beats 73% of 3,774 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 98K times each, and 1.70% of those impressions turn into an interaction. That is about 2.84% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.2 post a day over the last 30 days, with activity on roughly 67% of days. Most posts go out around 07:00 UTC, and Monday is the busiest day of the week. Of the 24 posts sampled, 88% carry an image or video and 67% link out. The account's strongest tracked post pulled 10K interactions, about 6.2x its own typical post. Recurring topics include #bt21, #shooky, #tata.
- What is BT21 Japan Official's engagement rate on X?
- BT21 Japan Official (@BT21_Japan) has an engagement rate of 0.048%, based on the median interactions across 24 original posts from the last 30 days against 3,468,984 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.048%, BT21 Japan Official sits above the 25th percentile of the 36,521 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_Japan have real engagement?
- Its engagement rate beats 73% of the tracked X accounts closest to it in follower count (3,774 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_Japan post?
- Most posts go out around 07:00 UTC, and Monday is its busiest day, at roughly 1.23 posts per day across the measured window.