Facebook Character Counter

Type or paste your Facebook content. The counter tracks character count live and flags when you cross the limit for posts (63,206), bios (101), comments (8,000), or ad headlines (40 characters).

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Facebook character limits by surface

Facebook uses different character limits across its surfaces, and the gap between them is larger than people expect:

Post. 63,206 characters. Effectively unlimited for normal use. Anything past ~500 characters folds behind "see more" and most readers do not expand.
Bio (About > Intro). 101 characters. The hard one to budget.
Comment. 8,000 characters. Generous, but anything over 250 is unusual.
Ad headline. 40 characters. The tightest budget on the platform.
Ad primary text. 125 characters before "see more" truncation.
Photo caption. Same as post (63,206) but truncates earlier in feed.
Page name. 75 characters.
Username (vanity URL). 50 characters.

The pill bar at the top of the tool lets you switch active limit. The headline limit (40) is the one most people get caught by.

Why the post limit is misleading

Facebook's documented post limit is 63,206 characters. In practice, that ceiling almost never matters. What matters is the truncation point: in news feed, Facebook clips posts at about 477 characters and folds the rest behind "see more". On mobile the clip happens around 240. The first three lines are the only lines guaranteed to render.

This is the same dynamic as Instagram's 125-character caption cutoff or LinkedIn's 210-character "see more" - the platform limit is far higher than the engagement-optimal length. Treat 240 characters as the soft budget for the post hook and the rest as bonus content for the readers who tap "see more".

Bio (101 characters) is the only hard one

The 101-character bio limit on the About > Intro field is the tightest on Facebook. Comparable benchmarks: Twitter bio is 160 (about 60% more), Instagram bio is 150, LinkedIn headline is 220, GitHub bio is 160. Facebook's bio sits well below.

Tactics for 101 characters:

Pick one identity claim and one CTA. "Pediatric dentist · Free new-patient consults · Link below" = 60 characters. Done.
Avoid emoji. Each emoji costs 1-4 characters depending on which one. Skip unless the brand requires it.
Skip the "Hi I'm" preamble. The space your name already takes in the page header is wasted bio space.
No URLs. The bio doesn't render links; the website field is separate.

Ad headline budget (40 chars) and how to use it

40 characters is the tightest ad headline budget on any major platform (Google Ads is 30 per line × 3 lines, but each line is independent). The tactics that work:

Lead with the benefit, not the brand. "Cut Closing Time in Half" beats "Acme Mortgage Now Available" - same character budget.
Use action verbs. "Get", "See", "Try", "Save", "Learn". They cost characters and deliver intent.
Numbers and specifics. "30-Second Quote" lands harder than "Quick Quote".
Test multiple variants. Facebook's algorithm rewards engagement diversity in the same ad set; ship 3-5 headline variants and let it learn.

The counter on this page tracks the active limit in real time. Pick "Ad headline" from the pill bar to see live budget against 40.

Frequently asked questions

What's the Facebook post character limit?

63,206 characters for a standard post. In practice it's effectively unlimited - what matters is the truncation point. On desktop, Facebook clips posts at about 477 characters and folds the rest behind "see more". On mobile the clip is around 240.

What's the Facebook bio character limit?

101 characters for the About > Intro field. This is the tightest standard limit on Facebook and the one most people get caught by.

What's the Facebook ad headline character limit?

40 characters for the headline. 125 characters for the primary text before "see more" truncation.

What's the Facebook comment character limit?

8,000 characters. Generous, but anything over ~250 is unusual.

Why does my post get truncated even though it's under 63,206?

Facebook truncates posts in feed at about 477 characters (desktop) and 240 (mobile), regardless of total post length. The truncation point is engagement-driven, not the hard limit. Front-load your hook into the first 240 characters.

Does the counter include emoji?

Yes. The counter uses JavaScript's String.length, which counts emoji as 2 (surrogate pair) for most. Facebook's actual length counting matches close to perceived characters, so the counter may slightly over-count emoji-heavy text.

Are hashtags counted?

Yes. Every character (including the # symbol) counts toward the post or ad limit.

Does the text get sent to Facebook to count?

No. The counter runs entirely in your browser. Nothing is sent to Facebook, Meta, or any server. Your draft stays local. See also: Character Counter. See also: Twitter Character Counter. See also: Instagram Character Counter. See also: Facebook Text Formatter.