The Facebook comment character limit is approximately 8,000 characters. Meta does not publish an official number for comments, so this figure comes from user testing rather than a documented spec — comments reliably stop accepting input somewhere around 8,000 characters, and very long comments get truncated behind a "See more" fold long before that. For the fields Meta does document, the 2026 limits are: profile bio 101 characters, Facebook Page short description 255 characters, and username 5–50 characters.
That distinction matters. If you need a number you can quote with confidence, the comment limit is the softest of everything on this page — treat ~8,000 as "roughly this much, and far more than any normal comment needs," not as an exact ceiling Meta guarantees.
Facebook character limits at a glance (2026)
| Field | Limit (characters) | Source confidence |
|---|---|---|
| Comment | ~8,000 (observed) | Soft — not published by Meta; from user testing |
| Comment reply | ~8,000 (observed) | Soft — same field behavior as top-level comments |
| Post / status | 63,206 | Firm — long-documented Facebook value |
| Profile bio ("About") | 101 | Firm |
| Page short description | 255 | Firm-ish — one source lists 155; 255 is the current majority reading |
| Username (vanity URL) | 5–50 | Firm |
Numbers reflect Facebook's behavior as of 2026. Meta ships changes without announcements, so verify anything mission-critical against the live compose box before you rely on it.
Why there's no "official" Facebook comment limit
Unlike the post character limit (63,206) or the username rules, Meta has never published a comment character limit in its Help Center or developer docs. The ~8,000 figure is what people consistently hit when they paste a wall of text into a comment box and watch where it stops. Because it's observed rather than documented, it can drift — and it may differ slightly between the web composer, the mobile apps, and comments made through the Graph API.
The practical takeaway: no real comment is anywhere near 8,000 characters. That's roughly 1,300–1,600 words — several paragraphs of solid text. If you're bumping into a limit on a normal comment, the more likely culprit is a paste that included hidden characters, not the ceiling itself.
Only the first ~1–2 lines of a long comment show
Even though you can type thousands of characters, Facebook collapses long comments behind a "See more" link. On most feeds only the first line or two is visible before the fold, so the opening words do all the work of earning a click to expand. If a comment matters, front-load it — put the point in the first sentence rather than burying it after three paragraphs of setup.
Does bold or fancy text change the comment limit?
Facebook comments are plain text — there's no bold button, and typing *asterisks* does nothing because Facebook doesn't parse markdown in comments. The workaround people use is pasting Unicode "bold" or "italic" characters (𝗹𝗶𝗸𝗲 𝘁𝗵𝗶𝘀), which are actually separate code points that merely look like styled letters.
Here's the catch that ties directly into any character limit: those Unicode glyphs often count as more than one character each, because many of them live outside the Basic Multilingual Plane and are encoded as surrogate pairs. So a "bold" comment can consume your character budget — and any counter's budget — far faster than the plain version of the same words. If you're formatting text and want to see the true length before you post, BoldlyType's free character counter checks it live, and how fancy text inflates your character count explains exactly why the number jumps. Never assume a styled comment counts the same as its plain-text twin.
