How long can a Reddit text post be?

40,000 characters for the post body. Combined with the 300-character title, you have plenty of room for long-form essays.

What is the Reddit comment character limit?

10,000 characters per comment and reply.

Can I edit a Reddit post after submitting?

Yes — text posts can be edited unlimited times. The title, however, cannot be edited once submitted; you'd need to delete and repost.

Do Reddit usernames have a character limit?

Yes — 20 characters maximum, using only letters, numbers, underscores, and hyphens. Subreddit names are capped at 21 characters.

🤖

Reddit Tool

Reddit Character Counter

Reddit post titles are capped at 300 characters — longer than Twitter's tweet limit. Text post bodies allow up to 40,000 characters, and comments up to 10,000. The counter below tracks every visible character including markdown.

Counting against

0 / 300(300 left)

Words

No spaces

Lines

Reddit Character Limits Cheatsheet

Field	Character limit	Notes
Post title	300	—
Post body (text)	40,000	—
Comment	10,000	—
Username	20	—
Subreddit name	21	—
Flair	64	—

Why does Reddit have this character limit?

Reddit's 300-character title limit was set in 2015 (up from the original 100) to accommodate longer, more descriptive titles common to communities like r/AskReddit and r/explainlikeimfive. The 40,000-character body limit covers virtually any long-form essay or technical post. Comments stay tighter at 10,000 to keep threads scannable.

Tips for Writing Better Reddit Content

1Titles do all the work

Reddit posts succeed or fail on the title. The title is what scrollers see; the body is bonus. Spend 80% of your post effort on the title.

2Front-load the surprising detail

Reddit users scroll fast. The first 60 characters of your title decide whether they stop. Lead with the most concrete or counterintuitive piece.

3Use markdown — it counts

Reddit posts and comments support markdown. **Bold**, *italic*, and [link text](url) all count character by character toward your limit.

4Avoid clickbait in r/serious communities

Many subreddits explicitly ban clickbait titles. 'You won't believe…' titles get removed by moderators in seconds.

5Comments under 200 characters get more upvotes

Reddit voting data shows top comments cluster around 100–200 characters — long enough to add value, short enough to scan.

Need More Than a Character Count?

Our main Character Counter shows word count, sentence count, reading time, and a full statistical breakdown of your text — alongside live character counts for every major platform.

📊Open Full Character Counter