Checker · 100% free, no signup · Updated May 2026
Live X/Twitter character count with RT headroom.
A free Twitter/X character counter with live count against the 280-character limit. Shows where line breaks land in mobile preview, flags banned characters, and highlights the "expand to see more" cutoff for long tweets.
Paste or type your tweet. The counter shows live character count + remaining + warns when you cross 270 (the RT headroom threshold).
Your tweet
Characters used
0/280
Start typing.
Why 270 matters
X composer caps at 280. But when someone quote-tweets you, they need ~10 chars for "RT @yourhandle:". Stay ≤270 and your tweets remain RT-friendly.
Who this is for
Anyone composing on X who needs to fit under 280 without checking after.
The problem this solves
X's composer shows the count but doesn't warn about retweet headroom (people quote-tweeting you need ~10 chars for "RT @handle:"). The counter warns at 270 so your tweet stays RT-friendly.
Twitter/X tweets between 70-140 characters earn approximately 30-40% more engagement than tweets over 200 characters or under 50 characters — the platform algorithm favors mid-length content.
Source: Buffer Twitter Performance Report 2024 + Hypefury Tweet Engagement Analysis 2024
How to use it
- 01
Type or paste tweet
Live count updates.
- 02
See count
Characters used / 280 + remaining. Color-coded.
- 03
Warn at 270
Yellow warning — under hard limit but no retweet headroom.
- 04
Red at 280
Hard cap. Trim to ship.
What you get
- ✓ Live character count / 280
- ✓ RT-headroom warning at 270
- ✓ Color-coded urgency
- ✓ Pure browser — no signup
Frequently asked
What's the Twitter/X character limit?
280 characters for non-Premium accounts. Premium subscribers can post up to 25,000 chars, but the algorithm de-prioritizes long posts in the feed.
Does the counter handle emojis correctly?
Yes — uses Unicode codepoint counting, which matches how Twitter actually counts emojis. Some ZWJ-sequence emojis count as 2 or more codepoints.
Should I always max out 280 characters?
No. Tweets between 70-140 chars earn the highest engagement. Maxing 280 feels desperate.
How does the counter help with threads?
Each tweet in a thread is independent — they each get 280 chars. The counter helps you keep each link short enough to leave context for the next.
Are line breaks counted?
Yes. Each line break is one character. A 3-line tweet with 2 breaks already uses 2 of your 280-char budget.
Related tools
Author + maintainer
Adrian Berisha — Founder of Clipflow. Indie SaaS builder shipping creator tools full-time since 2024. All tools and benchmarks on this page are reviewed quarterly. Last review: May 2026.
@clipflow on X · LinkedIn · hi@clipflow.to
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