How does the auto-split work?

The tool splits at word boundaries before the 280 character limit, accounting for the thread numbering characters. Use --- to force a split point.

What numbering format works best?

1/N is the most common format on X. It's short and universally understood. (1/N) is more visible. No numbering works for very short threads.

What's the ideal thread length?

5-10 tweets is the sweet spot for engagement. Enough to tell a story but not so long that readers drop off.

Content Tool

Twitter/X Thread Formatter

Name: AdaptlyPost
Author: AdaptlyPost

Turn long-form text into perfectly split tweet threads. Auto-splits at 280 characters on word boundaries, adds numbering, and lets you copy individual tweets.

100% free — no account needed

Numbering Format

Your Long-Form Text

Use --- on a new line to manually split tweets

Perfect Threads Every Time

Never manually split tweets again

Smart Splitting

Automatically splits at 280 characters on word boundaries — no mid-word breaks.

Thread Numbering

Choose 1/N, (1/N), or no numbering format for your thread.

Tweet Cards

See each tweet as a card with character count and numbering.

Copy Individual or All

Copy one tweet at a time or the entire thread at once.

FAQ

Content Tools

Schedule Threads Automatically

Write threads and schedule them to post on X with AdaptlyPost.