r/chemistry↗
Reddit Chemistry - Read the sidebar
A community for chemists and those who love chemistry
3.9M subscribers878 posts / mo in Sep 2026 (incl. ~1% by known bots)745 authors / mosince 2008
r/chemistry has 3.9M members (+1.6% over the last 12 months). It gets about 878 posts a month from 745 people. Top topics: Crystal Growing, Chemistry Exams & Notes and Engineering and Biomedical Sciences.
When to post on r/chemistry
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How r/chemistry has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/chemistry
Top topics
Share of the subreddit's posts
- Crystal Growing2.0%
- Chemistry Exams & Notes0.9%
- Engineering and Biomedical Sciences0.6%
- Chemistry Nuggets0.5%
- Copper Projects & Techniques0.4%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Doi
- ScienceDirect
- US EPA
- Wiley
- Royal Society of Chemistry
Everything else about r/chemistry
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research