r/japan
Founded January 2008 · Public — anyone can post
This subreddit serves as a general hub to discuss most things Japanese and exchange information, **as well as to guide users to subs specializing in things such as daily life, travel or language acquisition.** Users are strongly encouraged to check the sidebar and stickied general questions thread before posting.
Members
1,805,225
1.8M
Online now
—
not captured in the last snapshot
Posts per day
4.7
from the last 100 posts, spanning 21.2 days
Comments per post
—
no sample yet
Growth · 7d
—
not enough history yet
Growth · 30d
+0.3%
+5.4K members · ≈37d
Promo tolerance
—
not assessed yet
Last post
Sep 25
sampled Sep 25
Distinct posters
49%
of the last 100 posts
Tracking since Aug 2 · growth spans are the real distance between snapshots, not rounded windows. Posts/day is measured from the community’s own newest posts on Reddit, not from what Prowlo happens to crawl.
Member growth
Similar by content
Communities that discuss what r/japan discusses.
Got questions? Need advice? Overwhelmed with your itinerary? Want to share your travel tips and experiences in Japan? Then this is the place for you! /r/JapanTravel is for any and all looking to visit Japan as a tourist — including those who have already been.
For people living in Tokyo and the surrounding metropolitan area. Please read the rules before posting. Tourist questions should go to r/TokyoTravel.
Welcome to r/LearnJapanese, *the* hub on Reddit for learners of the Japanese Language.
Have a quick question about traveling in Japan? Want to share a tip or suggestion? Looking for broad recommendations? You've come to the right place!
This is a subreddit for people learning the Japanese language. A Place where I Hope you can feel welcome and learn something!!!
See the full lists on similar subreddits.
r/japan — frequently asked
How many members does r/japan have?
r/japan has 1,805,225 members as of our most recent crawl on Sep 25. Prowlo re-checks tracked communities on a rolling schedule, so this figure moves rather than sitting frozen at whatever it was when a scraper last ran.
Is r/japan growing?
Over the last ≈37 days r/japan changed by +0.3% — a gain of 5.4K members. We compare against the nearest snapshot we actually hold and state the real span rather than rounding it to a clean "30 days".
How active is r/japan?
Around 4.7 posts per day, measured from the newest 100 posts on Reddit, which span 21.2 days. Posting rate matters more than subscriber count when you're deciding where to spend your time — it determines how long your comment stays visible.
When was r/japan created?
r/japan was founded in January 2008 and is a public — anyone can post community. Age matters: an older community with steady growth has survived Reddit's moderation churn; a young one with a spike may not.
Who posts in r/japan?
Of the last 100 posts we sampled, 49% came from distinct accounts; the newest was published Sep 25. A low share means a feed dominated by a handful of accounts (bots, mods, or one prolific poster) rather than a community.
Can I promote my product in r/japan?
We don't have a promo-tolerance read for r/japan yet. Default to the safe approach: read the sidebar rules, contribute in threads where you gain nothing, and mention your product only when it is the honest answer to someone's question.
How do I monitor r/japan for mentions?
Hit Watch on this page. Prowlo starts crawling r/japan into your Dataset — every new post indexed and embedded, searchable semantically, queryable by your AI agent over MCP, and able to trigger keyword alerts in Slack. Prowlo is read-only; it never posts on your behalf.
Can my AI agent read r/japan's stats?
Yes. Everything on this page is one MCP tool call away: catalog_get_subreddit returns r/japan's members, growth, promo tolerance and similar communities as typed JSON — free, no credits. Connect your agent to api.prowlo.com/mcp and it can vet the community and start watching it in the same conversation.
Read-only · Human-in-the-loop
Prowlo never posts for you
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