BYTETOOLS

Twitter Thread Splitter

Split long text into a numbered X (Twitter) thread. Breaks at sentence and word boundaries under the weighted 280 limit, with per-tweet copy buttons.

What is the Twitter Thread Splitter?

Twitter Thread Splitter turns a long piece of writing into a ready-to-post X thread. It splits your text at word and sentence boundaries so no tweet ends mid-word, numbers each part (1/7, 2/7 …) and reserves room for the numbering inside the limit.

  • Splits at sentence and word boundaries — never mid-word
  • Uses X's weighted counting (URLs = 23, emoji = 2) for every tweet
  • Automatic 1/n numbering with room reserved inside the 280 limit
  • Per-tweet copy buttons plus a copy-all option
  • Live re-split as you edit your draft
  • 100% local — your draft never leaves the browser

How to use the Twitter Thread Splitter

  1. 1

    Paste your long text into the input box.

  2. 2

    Choose whether to add 1/n numbering and whether it goes at the end or the start of each tweet.

  3. 3

    Review the split — each tweet shows its weighted character count.

  4. 4

    Copy tweets one by one with their copy buttons, or copy the whole thread at once.

About the Twitter Thread Splitter

Twitter Thread Splitter turns a long piece of writing into a ready-to-post X thread. It splits your text at word and sentence boundaries so no tweet ends mid-word, numbers each part (1/7, 2/7 …) and reserves room for the numbering inside the limit. Counting uses X's real weighted rules — links cost 23 characters and emoji cost 2 — so every tweet genuinely fits.

It is made for writers, founders and social media managers who draft threads in a document and then face the tedious job of cutting them up by hand. Paste once, review the split, and copy each tweet with its own button as you post.

The splitter runs entirely in your browser. Your draft is never uploaded, so unpublished threads stay private and the tool works offline.

Frequently asked questions

How do I split a long post into a Twitter thread?

Paste the full text into the splitter and it divides it into tweets that each fit the 280-character weighted limit, preferring to break after sentences. Each tweet gets a copy button so you can post the thread in order.

Does the numbering count against the character limit?

Yes, on X the “1/7” marker is part of the tweet text, so the splitter reserves space for the numbering before it fills each tweet. That is why each part is slightly shorter than the raw limit.

Will links or emoji make a tweet overflow after splitting?

No. The splitter uses the same weighted counting X uses — every link is priced at 23 characters and emoji at 2 — so a tweet that fits here also fits in X's composer.

What is the tweet length limit the splitter uses?

It targets the standard 280 weighted-character limit that applies to free X accounts as of 2026. Premium accounts can post much longer single posts, but threads written for general audiences still use 280 per tweet.

Can I control where the thread breaks?

The splitter automatically prefers sentence endings and never breaks inside a word or a link. If you want a break in a specific place, end the sentence there or split the paragraph in your draft and re-paste.

Related tools