back number staff engagement report
@backnumberstaff - 591K followers on X
Measured over 41 original posts from a 30-day window, last computed on October 9, 2026.
Engagement
A typical post picks up 2.0K interactions against 591K followers, an engagement rate of 0.346%. Measured over 41 original posts, its engagement rate beats 88% of 20,444 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 81K times each, and 2.53% of those impressions turn into an interaction. That is about 13.7% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.4 posts a day over the last 30 days, with activity on roughly 77% of days. Most posts go out around 09:00 UTC, and Sunday is the busiest day of the week. Of the 41 posts sampled, 76% carry an image or video, 24% are part of a thread and 78% link out. The account's strongest tracked post pulled 14K interactions, about 6.9x its own typical post. Recurring topics include #backnumber, #backnumberアジアツアー, #oneroom.
Measured over 41 original posts from a 30-day window, last computed on October 9, 2026. Recurring tags: #backnumber, #backnumberアジアツアー, #oneroom.
Compared with accounts its own size
back number staff's engagement rate beats 88% of the tracked X accounts closest to it in follower count (20,444 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 73% 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 0.346%, back number staff sits above the 50th percentile of the 205,374 accounts in this comparison. That places it in the above the median band, which runs 0.143% to 0.678%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.024% |
| 50th percentile | 0.143% |
| 75th percentile | 0.678% |
| 90th percentile | 2.55% |
| 99th percentile | 82.4% |
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 09:00 UTC, and Sunday 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% | 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 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
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.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 76% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 78% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | -3% | -3% to -2% | 54K |
- 76% 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.
- 78% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts, so a large share of this account's output sits in the weakest bucket we measure.
- Its average post runs 170 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
- Aug 21, 20266.9x their median
視線(も) https://t.co/4jKlFCDt6Q
- Jun 28, 20266.8x their median
“Grateful Yesterdays Tour 2026” in 熊本えがお健康スタジアム 5大スタジアムツアーファイナル熊本公演へお越しいただき、 ありがとうございました! 宮城から始まり、 静岡、大阪、神奈川、 そして熊本へ。 このツアーで出会えた方、遠くから応援してくださった方、支えてくださったすべてのみなさんへ、感謝の気持ちを込めて。 最後のダイジェストを少しだけ。 セットリストプレイリストも公開しましたので是非ライブで披露した楽曲をお楽しみください! 🎧https://t.co/tt7z2JmI8l Director : @takumisaitoh_ #backnumber #backnumberスタジアムツアー
- Sep 25, 20264.5x their median
視線(も) https://t.co/s9neza2WMj
- Aug 8, 20264.3x their median
TikTok LIVE Premiere 清水依与吏(back number) -Acoustic Live- ご覧いただきありがとうございました✨ #backnumber #TikTokLIVEPremiere https://t.co/75wo7mgExJ
- Aug 23, 20263.8x their median
“Grateful Yesterdays Tour 2026” 【TAIPEI】Taipei Arena DAY2 THANK YOU TAIPEI !! photo by @H_and_A #backnumberアジアツアー #backnumber https://t.co/mBuVGaXz1b
- Sep 4, 20263.8x their median
back number fanclub tour 『one room party vol.8』 開催決定🎉 🏁2027年9月からスタート! 日程や会場、チケットの詳細は後日オフィシャルサイトにて発表します! https://t.co/4v7zYQMhLQ お楽しみに🔑 #oneroompartyvol8 #backnumber @oneroomparty https://t.co/ReXtRvc86n
- Aug 4, 20263.6x their median
視線(も) https://t.co/6hhpTaKSi3
- Aug 22, 20263.5x their median
視線(も) https://t.co/fD4TXHwHIH
- Aug 24, 20263.2x their median
“Grateful Yesterdays Tour 2026” 【TAIPEI】Taipei Arena 感謝大家🙏 讚👍👍👍 Director : @takumisaitoh_ #backnumberアジアツアー #backnumber https://t.co/ymUbpXG5pB
- Aug 3, 20263.2x their median
TikTok LIVE Premiere 清水依与吏(back number) -Acoustic Live- 8/8(土)18:30〜(予定)開催決定! 📡 ぜひご覧ください👀 🔻back number TikTok公式アカウント https://t.co/1yeB8ly5oP #backnumber #TikTokLIVEPremiere https://t.co/uVhpj55c8D
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 2.0K interactions against 591K followers, an engagement rate of 0.346%. Measured over 41 original posts, its engagement rate beats 88% of 20,444 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 81K times each, and 2.53% of those impressions turn into an interaction. That is about 13.7% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 2.4 posts a day over the last 30 days, with activity on roughly 77% of days. Most posts go out around 09:00 UTC, and Sunday is the busiest day of the week. Of the 41 posts sampled, 76% carry an image or video, 24% are part of a thread and 78% link out. The account's strongest tracked post pulled 14K interactions, about 6.9x its own typical post. Recurring topics include #backnumber, #backnumberアジアツアー, #oneroom.
- What is back number staff's engagement rate on X?
- back number staff (@backnumberstaff) has an engagement rate of 0.346%, based on the median interactions across 41 original posts from the last 30 days against 591,203 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.346%, back number staff sits above the 50th percentile of the 205,374 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 @backnumberstaff have real engagement?
- Its engagement rate beats 88% of the tracked X accounts closest to it in follower count (20,444 accounts), which puts it in the top quarter for its size 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 @backnumberstaff post?
- Most posts go out around 09:00 UTC, and Sunday is its busiest day, at roughly 2.43 posts per day across the measured window.