MastodonMastodon

Mastodon Character Counter

Count characters and stay within platform limits in real time.

0/500

500 remaining

How to use the Mastodon Character Counter

Mastodon enforces a 500-character limit on posts. Exceeding it means your content gets cut off or rejected. This tool counts in real time so you can edit before you post.

  1. 1.Type or paste your Mastodon post into the text area above
  2. 2.Watch the character count update in real time as you type
  3. 3.Edit your text to fit within the 500 character limit, then copy and post

Why use the Mastodon Character Counter?

Mastodon enforces a 500-character limit on posts, and going over means your content is cut off or rejected. This counter tracks characters in real time as you type so decentralized, community-run, ad-free social users can trim to fit before publishing — no guessing, no surprises after you hit post.

Mastodon specifics

Post limit
500 characters
Bio limit
500 characters

Tips for Mastodon

  • the 500-character post limit is set per-instance and can vary between servers — front-load the important words.
  • Spaces, emojis, and line breaks all count toward the limit on Mastodon.
  • Links on Mastodon often count their full length, so account for URLs in your total.

Frequently asked questions

What is the Mastodon character limit?

500 characters. This tool counts against the 500-character limit live as you type.

Do emojis and spaces count toward the Mastodon limit?

Yes. Spaces, line breaks, and emojis all consume characters on Mastodon. Some emojis count as two characters because of how they're encoded, and this counter reflects that.

Is the Mastodon character counter free and private?

Yes. It runs entirely in your browser — your text is never uploaded or stored — and there's no sign-up or usage limit.

Related guides

Social media character limits

Compare post, caption, bio, title, and message limits across every supported platform.

Social media bio limits

Check profile bio and about-section limits before updating your social profiles.