Reddit character limits for post titles (300), text posts (40,000), comments (10,000), usernames, and flairs. Complete 2026 guide for redditors.
Published: April 2026 | Last Updated: April 2026
Photo by Szabó Viktor on Pexels
Reddit post titles are limited to 300 characters. Text posts allow up to 40,000 characters. Comments can be up to 10,000 characters.
| Field | Character Limit | Notes |
|---|---|---|
| Post Title | 300 | Cannot be edited after posting |
| Text Post | 40,000 | Self posts (text-only submissions) |
| Comment | 10,000 | Per individual comment |
| Username | 3–20 | Cannot be changed after account creation |
| User Flair | 64 | Subreddit-specific flair text |
| Subreddit Name | 3–21 | Created once, cannot be renamed |
| Subreddit Description | 500 | Public description shown to visitors |
| Custom Feed Name | 50 | Name for custom multi-reddit feeds |
| Chat Message | 512 | Reddit chat messages |
Write your Reddit post in our free word counter tool and check the character count before posting. Especially useful for titles since they can't be edited.
Paste your text into our free word counter tool to instantly count words, characters, sentences, paragraphs and pages.
Open Word CounterWhat is the Reddit post title character limit?
Reddit post titles are limited to 300 characters. Titles cannot be edited after posting, so check carefully before submitting.
What is the Reddit comment character limit?
Reddit comments can be up to 10,000 characters long. Comments support Markdown formatting.
What is the Reddit text post character limit?
Reddit text posts (self posts) can be up to 40,000 characters — roughly 6,000–7,000 words.
Can you edit a Reddit post title?
No. Reddit post titles cannot be edited after submission. This is one of the few platforms where titles are permanently locked.
The sources and check dates in this table come from one versioned data file — the place we record every check we make. The rest of this page, and the limits built into our tools, are still separate copies, so when we correct a figure we correct it in each place. This table is how we keep ourselves honest while we do.
Every figure on this page was carried across from our own older pages. Not one of them has been checked against the platform’s own documentation, so none of them carries a source or a last-checked date. We would rather show you that plainly than print a date we have not earned.
Still to be checked against: Reddit Help (support.reddithelp.com)
| Field | Limit | Notes | Source | Last checked |
|---|---|---|---|---|
| Post Title | 300 | Cannot be edited after posting | No source recorded | Not yet verified against the platform’s own documentation |
| Text Post | 40,000 | Self posts (text-only submissions) | No source recorded | Not yet verified against the platform’s own documentation |
| Comment | 10,000 | Per individual comment | No source recorded | Not yet verified against the platform’s own documentation |
| Username | 3–20 | Cannot be changed after account creation | No source recorded | Not yet verified against the platform’s own documentation |
| User Flair | 64 | Subreddit-specific flair text | No source recorded | Not yet verified against the platform’s own documentation |
| Subreddit Name | 3–21 | Created once, cannot be renamed | No source recorded | Not yet verified against the platform’s own documentation |
| Subreddit Description | 500 | Public description shown to visitors | No source recorded | Not yet verified against the platform’s own documentation |
| Custom Feed Name | 50 | Name for custom multi-reddit feeds | No source recorded | Not yet verified against the platform’s own documentation |
| Chat Message | 512 | Reddit chat messages | No source recorded | Not yet verified against the platform’s own documentation |