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r/askmath↗

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This subreddit is for questions of a mathematical nature. Please read the subreddit rules below before posting.

249k subscribers777 posts / mo in Sep 2026610 authors / mosince 2008

r/askmath has 249k members (+17% over the last 12 months). It gets about 777 posts a month from 610 people. Top topics: Math Equations, Math Help & Solving Questions and Help With Questions.

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Size and growth

How r/askmath has grown

r/askmath

Subscriber growth

Subscribers over time

+17%in 12 months · +3.3% in 3 months · +0.7% in 1 month
Oct 2026249k
Growing249k subscribers
Data since Mar 2018Live · through Oct 2026
r/askmath

Monthly activity

Posts, comments and authors per month

−29%vs Sep 2025 · −22% last 3 months vs the 3 before
Sep 2026777
QuieterPeaked at 2.6k in Mar 2024
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/askmath

Top topics

Share of the subreddit's posts

  1. Math Equations2.2%
  2. Math Help & Solving Questions1.3%
  3. Help With Questions1.2%
  4. Seeking Answers1.0%
  5. SolvingProblems0.8%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Stack Exchange
  2. Wolfram
  3. Wolfram Research (United Kingdom)
  4. arXiv.org e-Print archive
  5. xkcd

The full report

Everything else about r/askmath

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