Paste once. See whether your draft fits LinkedIn, X, Instagram, TikTok, Threads, Bluesky, and 23 other platforms. Live results, soft and hard caps, no signup.
Cuts at ~210 chars in the feed; first 3 lines are everything.
Premium accounts can post up to 25 000 chars but only 280 show in-line.
Posts under 80 chars get ~66% more engagement than longer ones.
Cuts at 125 chars in-feed; first 138 chars are what most readers see.
Counts graphemes, not chars — emoji = 1 grapheme.
Most instances default to 500; some servers allow up to 4096.
Title 100 chars max — separate field.
Title is capped at 300 chars — separate field.
Optimal read time = 7 minutes ≈ 1 600 words.
4000 chars for Nitro accounts.
Hard wraps at 4 000; longer messages render as a snippet attachment.
Title capped at 64 Chinese chars.
Title capped at 20 Chinese chars; first sentence drives the algorithm.
Title 100 chars; first ~200 chars show above the 'Show more' fold.
First 100 chars are what shows before tap-to-expand.
Most counter tools just measure .length and call it a day. That's wrong on three of the platforms most writers care about:
Twitter weights URLs as exactly 23 chars regardless of how long the actual link is, and counts CJK / Hiragana / Katakana / Hangul as 2 chars each. A 100-character Mandarin tweet weighs 200, not 100. We mirror Twitter's published counting rule above.
Bluesky counts graphemes (what you'd call a "user-perceived character"). The family-emoji 👨👩👧 is one grapheme but multiple Unicode code points — naive counters mark it as 5+ chars and you'll think you've broken your limit when you haven't.
The platform allows 3 000 / 2 200 / 2 200 chars respectively, but engagement plateaus far below that. LinkedIn cuts at ~210 chars in the feed; Instagram at 125; TikTok at 100 before the "more" tap. Your hook is what fits before the truncation, not what fits in the hard cap.
Medium, Substack, WordPress, Ghost, Dev.to, Hashnode — none of these enforce a length limit. The right answer there is "what does the topic warrant?", which is a different question than this tool answers.