The shorter the text, the more a length limit shapes the outcome. A tweet gets cut off, an application essay is rejected once it passes "up to 500 characters," and a meta description loses its tail in search results past a certain length. Character count looks trivial, but miss it and you're editing again.
Every platform has a different limit
The same text is allowed a different length depending on where you post it. Common limits include:
- X (Twitter): about 280 characters
- Threads: about 500 characters
- Instagram caption: about 2,200 characters
- Bluesky: about 300 characters
- SMS: about 160 characters (Latin text)
These numbers can change with platform policy, but keeping a rough sense of them makes it easy to adjust length as you write. Watching the remaining count live while writing is far more efficient than counting right before you post.
With spaces? Without? And CJK and emoji
Character counts differ by how you count.
- With vs. without spaces: essays often specify something like "300 characters excluding spaces." Seeing both figures lets you meet either rule.
- One CJK character = 1: Korean or Chinese characters, Latin letters, digits, and punctuation each count as one.
- Emoji: an emoji can be built from several code points internally, but counting it as the single character you see is the natural approach.
- Word count: split on spaces and line breaks. Useful for the word-count requirements common in English writing.
Hitting a required length
When you have a fixed length to hit, write with the length in mind from the start. Writing by feel almost always means trimming or padding afterward. Keep a live counter beside you, fill to about 90% of the target, then refine: you'll land it naturally without going over.
For a talk or video script, the time it takes to read matters more than the character count. Estimating duration from a per-minute reading and speaking rate tells you in advance whether it fits the time you have.
Private, and ready right away
You're often working with things you'd rather not share yet: a résumé draft, an unpublished announcement. A tool that counts entirely in your browser never sends your text to a server, so you can work with peace of mind.
To see characters, words, and sentences update live along with the remaining count per platform, paste your text into the Character Counter.