About r/learnmath
In its own words:
Post all of your math-learning resources here. Questions, no matter how basic, will be answered (to the best ability of the online subscribers).
The community was created on Nov 29, 2009, which makes it 16 years old. Among the 9 communities on our mathematics list it is number 2 by size.
What sets r/learnmath apart
r/learnmath is far more text-driven than most big subreddits: 77% of its recent posts are text posts, against a median of 35% across the Top 100. r/learnmath is more of a browsing community than a debating one: 5.5 comments per post on average, well under the Top 100 median of 13.0. For its size it is unusually busy: about 92.8 new posts a day per million members, more than 95% of the Top 100. Its rhythm is strongly tied to time zones: the busiest hour (02:00 UTC) sees about 5.7× as many posts as the quietest (09:00 UTC).
Top posts on r/learnmath this week
The most upvoted posts of the past seven days, in the order Reddit ranks them (collected Nov 9, 2026).
- How do top students study?u/G_sho4 · Nov 3 · text post
- Do people who do math/stats professionally (academics, scientists, etc.) also struggle with understanding math-heavy notations?u/Agreeable-Shop-9769 · Nov 6 · text post
- Where do I start in linear algebra?u/smegmaenjoyer6572 · Nov 5 · text post
- Just started my maths degree, does it get better?u/isaacdidwhat · Nov 3 · text post
- Advice needed on becoming proficient in math.u/Specialist_Snow_3937 · Nov 7 · text post
- Is there something bigger than a factorial?u/Much-Connection2074 · Nov 7 · text post
- I can calculate 4 − (−7) = 11, but I can't explain in my own words why it works.u/Spica_stars · Nov 3 · text post
- from the basicsu/lovebug712 · Nov 4 · text post
- Have you ever followed every step of a solution and still got stuck the moment the problem changed a little? Two months of reading finally showed me why.u/b_mahanty · Nov 5 · text post
- [Request] How exactly should I study university-level mathematics?u/HHHHHHHHH1361 · Nov 2 · text post
All-time top posts
The highest-ranked posts in the history of r/learnmath, from 2018 to 2026, ranked by Reddit.
- Why isn’t infinity times zero -1?u/SnooPuppers7965 · Mar 27, 2025 · text post
- I just got 100% mastery on 2nd grade math on Khan AcademyAug 10, 2020 · text post
- List of websites, ebooks, downloads, etc. for mobile users and people too lazy to read the sidebar.Jun 7, 2018 · 334 points · 47 comments · text post
- What's the easiest way to explain to a 8 year old why 0.999... equals 1?u/ElegantPoet3386 · Dec 1, 2024 · text post
- Why is 7x7 bigger than 6x8?u/nickegg11 · Nov 5, 2024 · text post
- After high school, undergrad, and now halfway through a masters- I understand what Log does!u/17Brooks · Dec 17, 2019 · 820 points · 105 comments · text post
- Full Guide to Self-Studying Mathu/RecipeBeneficial6378 · Feb 13, 2026 · text post
- I just calculated my first derivative. Holy crap.u/flushingborn · Jul 26, 2020 · text post
- What is the correct answer: 1% or 50%?u/derzhinosbodrey · Jan 28, 2024 · text post
- Oh my god, Professor Leonard is leagues better than Khan Academy. How am I just finding out about it? XDFeb 4, 2019 · 565 points · 67 comments · text post
What r/learnmath talks about
Across 243 recent posts (Oct 31–Nov 7), the words that come up most are “math”, “free”, “algebra”, “help” and “learn”. Other frequent themes are maths, study, mathematics, amc, learning and set. Recurring phrases include “linear algebra”, “set theory”, “theory exercise” and “binomial theorem”. By format, 77% are text posts, 13% are links and 10% are videos.
Popular post flairs: TOPIC (32), Link Post (30), RESOLVED (4).
Activity and best time to post
r/learnmath gets about 34 new posts a day. The public archive holds 280,103 posts and 1,548,620 comments in total, about 5.5 comments per post. Last week the busiest day was Tuesday (45 posts) and the quietest was Saturday (16). Posting peaks around 02:00 UTC and is lowest around 09:00 UTC.
How to join
Open reddit.com/r/learnmath and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How big is r/learnmath?
r/learnmath has 368,731 subscribers.
When was r/learnmath created?
r/learnmath was created on Nov 29, 2009, so it has been around for 16 years.
Is r/learnmath still active?
Yes. r/learnmath gets about 34 new posts a day (average of the last four weeks). Over its lifetime the archive counts 280,103 posts and 1,548,620 comments. In a sample of 243 recent posts we counted 202 different authors.
What is the best time to post in r/learnmath?
Based on post counts from Oct 31, 2026 to Nov 6, 2026, the busiest day was Tuesday and the quietest Saturday, and most posts arrive around 02:00 UTC, with the fewest around 09:00 UTC. More posts also means more competition, so a quieter hour can help a post get noticed.
What kind of posts are on r/learnmath?
The community describes itself as: “Post all of your math-learning resources here. Questions, no matter how basic, will be answered (to the best ability of the online subscribers).” Recent post titles often mention math, free, algebra, help and learn. Most posts are text posts (77%).
Is r/learnmath SFW?
Yes. Reddit does not mark r/learnmath as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
What are the rules of r/learnmath?
Join the community on Reddit first, then use “Create post”. r/learnmath accepts both text and link posts. Moderators remove posts that break the rules, so read them in the sidebar before posting.
What subreddits are similar to r/learnmath?
Communities with similar topics include r/math (4M).
Stats from public data (data updated Nov 9, 2026; activity, rules and archive totals via the Arctic Shift archive, Nov 9, 2026; top posts from Reddit’s public feeds). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/learnmath.