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r/probabilitytheory↗

Probability Theory

For everything probability theory related! No matter if you're in highschool or a stochastic wizard; if you want to learn something about this subject you're most welcome here.

36k subscribers44 posts / mo in Sep 202638 authors / mosince 2012

r/probabilitytheory has 36k members (+59% over the last 12 months). It gets about 44 posts a month from 38 people. Top topics: Dice Mechanics, Math Equations and Help With Questions.

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When to post on r/probabilitytheory

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Size and growth

How r/probabilitytheory has grown

r/probabilitytheory

Subscriber growth

Subscribers over time

+59%in 12 months · +20% in 3 months
Oct 202636k
Growing36k subscribers
Data since Mar 2018Live · through Oct 2026
r/probabilitytheory

Monthly activity

Posts, comments and authors per month

+2.3%vs Sep 2025 · +74% last 3 months vs the 3 before
Sep 202644
BusierPeaked at 124 in Dec 2022
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/probabilitytheory

Top topics

Share of the subreddit's posts

  1. Dice Mechanics1.2%
  2. Math Equations0.8%
  3. Help With Questions0.8%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. arXiv.org e-Print archive
  2. Canva
  3. Doi
  4. Stack Exchange
  5. AnyDice

The full report

Everything else about r/probabilitytheory

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