Skip to content
KissMyPost
Log inGet started

r/theydidthemath↗

Useless Yet Interesting Calculations

And they said math has no real world applications

2.5M subscribers1,223 posts / mo in Sep 20261,074 authors / mosince 2013

r/theydidthemath has 2.5M members (+11% over the last 12 months). It gets about 1,223 posts a month from 1,074 people. Top topics: OddsAndChances, Fuel Efficiency and Morning Coffee.

Start for $1 Log in

Free report

When to post on r/theydidthemath

You've used today's free reports

Visitors without an account can open 3 subreddit reports a day. The best time to post on r/theydidthemath, removal risk and the rest of the report are one step away.

Start for $1 Log in

Size and growth

How r/theydidthemath has grown

r/theydidthemath

Subscriber growth

Subscribers over time

+11%in 12 months · +1.8% in 3 months · +0.4% in 1 month
Oct 20262.5M
Growing2.5M subscribers
Data since Mar 2018Live · through Oct 2026
r/theydidthemath

Monthly activity

Posts, comments and authors per month

−30%vs Sep 2025 · −17% last 3 months vs the 3 before
Sep 20261.2k
QuieterPeaked at 3.3k in Dec 2023
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/theydidthemath

Top topics

Share of the subreddit's posts

  1. OddsAndChances0.6%
  2. Fuel Efficiency0.3%
  3. Morning Coffee0.1%
  4. Math Equations0.1%
  5. Mathematics Classroom Experience0.1%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. xkcd
  2. Wolfram
  3. NASA
  4. ScienceDirect
  5. Stack Exchange

The full report

Everything else about r/theydidthemath

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.

Start for $1 Log in

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research