Every social platform has a hard character limit on bios, and most creators hit it the wrong way — by pasting a bio that silently gets cut off mid-sentence. Here's a quick reference to every major limit, why the rules exist, and a free tool that does the counting for you.
The character limits that actually matter
| Platform | Bio limit |
|---|---|
| 150 characters | |
| TikTok | 80 characters |
| Discord (About Me) | ~200 characters |
| Linktree | 150 characters |
| X / Twitter | 160 characters |
Instagram's 150-character cap is the one most people trip on, because a bio that looks short in your notes app can quietly hit the ceiling once you add emojis and line breaks.
What actually counts toward the limit
Almost everything counts:
- Spaces and punctuation — yes, every single one.
- Line breaks — yes, each new line counts as a character.
- Emojis — each emoji counts as one character, even though it takes up the width of two or three letters on screen.
That last point is the trap. A bio full of symbols can look spacious in your draft and still be over the limit once pasted, because the width tricks your eye but not the counter.
What happens when you exceed the limit
Instagram, TikTok and most platforms don't warn you — they just stop displaying everything past the limit. The result is a truncated sentence, a lost link, and a profile that looks sloppy to everyone who visits. Checking the count before you paste is the only reliable fix.
The 3-line rule that fits inside 150
Most effective Instagram bios follow a three-line rhythm:
- Who you are — one short identity line ("soft life enthusiast", "chaos is my aesthetic").
- What you're into — a single interest line in your chosen style.
- A small invitation — "follow for the good vibes", "DM me your favorite throwback".
Keep each line under ~50 characters and the whole bio lands comfortably inside 150, even with a couple of emojis.
A free tool that does the counting for you
If you don't want to count by hand, the free character counter at Aesthetic Bio Maker tells you exactly how many characters your bio uses and whether it fits — plus a quick reference table for every platform's limit. There's also a generator that writes and trims bios to the platform you pick, and copy-ready idea lists like Discord bio ideas and TikTok bio ideas.
No sign-up, no watermark. Count it, trim it, paste it.
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