Twitter / X 向けのライブ文字カウンタ。重み付き文字計算（URLは23文字、CJK文字は2文字としてカウント）を実装し、長文を自動的にスレッドに分割します。
Use the tweet length checker when drafting Twitter / X posts, especially threads. The Twitter-weighted counter is the only reliable way to verify length, since the platform applies different rules to URLs, CJK characters, and emoji than a naive char count.
Most online tweet counters use raw character count and miscalculate URLs and CJK. This one mirrors the official Twitter rule so the number matches what the platform will show.
Twitter weights characters: ASCII = 1, most CJK / Arabic / Hebrew code points = 2, URLs = 23 regardless of true length.
The counter mirrors Twitter's rules, so the number matches what the platform will accept.
If your text exceeds the limit, the auto-splitter breaks at sentence boundaries and optionally appends thread indicators "(1/3)" etc.
Twitter weights characters: URLs count as 23, CJK/Arabic/Hebrew characters count as 2. This tool matches Twitter's rules.
X Premium subscribers can post up to 25,000 characters. Toggle long-post mode if you have Premium.
It breaks at sentence boundaries when possible, otherwise at word boundaries. Each piece is verified to fit the limit, with optional (i/n) indicators.
入力
"Just shipped a major update — check it out at https://example.com/v2 ✨ details inside!"
出力
67 weighted chars / 280 (213 remaining) — fits in one tweet.
URLs are counted as 23 chars regardless of true length (here "https://example.com/v2" is 22 chars but counts as 23). ASCII chars count as 1; the emoji counts as 2.