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Free subreddit finder

Type a topic and this subreddit finder lists the Reddit communities about it, with subscriber counts and a short description of each.

Updated

How it works

  1. 1Type a topic, a problem or an interest in a few words.
  2. 2We search Reddit's community index for subreddits that match.
  3. 3You get a list of communities, each linking to its full stats and rules.

What you get

  • Subreddit name
  • Title
  • Subscriber count
  • Description (first part)
  • Creation date
  • NSFW flag
  • Link to the community's stats, rules and moderators

Use cases

  • Find where your customers talk before you write your first Reddit post.
  • Build a list of subreddits similar to a community you already know.
  • Compare community sizes in a niche to decide where to spend time.
  • Find small, focused subreddits that big lists of popular communities miss.

How to use the subreddit finder

The subreddit finder searches Reddit's own community index for your topic and returns the matching subreddits with their size and description. Two or three words get you a list you can scan in under a minute.

Search for the problem rather than the product. People rarely gather around a brand name, but they do gather around the thing they are trying to do. "Cold email" finds the communities where people trade outreach tips. "Email automation software" finds fewer, and often the wrong ones.

What each row tells you:

  • Subscribers: how many people joined. A bigger number isn't always better, since a small focused subreddit can be more useful than a huge general one.
  • Description: what the community says it is about, in its own words.
  • NSFW flag: this page leaves adult communities out.

Click any name to open Subreddit Stats for that community.

Finding similar subreddits

Reddit has no "similar communities" button that works well, so the reliable method is to search around the topic. Start with the obvious word, then try the words people in that community use. Searching "sourdough", then "bread baking", then "home baking" turns up most of the related subreddits.

Descriptions help here too. Many communities name their sister subreddits in the description or sidebar, which gives you your next search.

Before you post in a new community

Every subreddit sets its own rules, and many remove self-promotion on sight. Read the rules and recent posts first. Subreddit Stats shows the full rule list and posting settings, and Subreddit Posts shows what is on the front page right now.

To run the same search from your code or an AI agent, see /docs/tools/reddit-communities. This search doesn't return rules or moderators; call the subreddit endpoint for those.

Questions

Does the subreddit finder show rules and moderators?
They are not in the list. Click a community name to open Subreddit Stats, which shows its full rules, moderators and posting settings.
How do I find subreddits similar to one I already know?
Search the topic that community covers, then the words its members use. Reddit has no reliable similar-communities feature, so searching around the topic finds more.
Why are some communities missing?
Private, banned and adult communities do not appear on this page. Reddit also ranks its own search results, so very new or very small subreddits can end up further down.
Is the subscriber count live?
It is the number Reddit reports at the time of the search. If you repeat a search for the same topic within a day, you may get a recent cached result.
Is this tool free?
Yes. Each visitor gets 10 free runs a day, and each run shows the first rows of the result. With a free account you see the full page, and the API has no daily cap beyond your credits and rate limit.
Is this affiliated with Reddit?
No. ChatterAPI is independent and not affiliated with Reddit, Inc. or X Corp.

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