Community profile

r/todayilearned

RisingDiscussion & adviceCreated Dec 28, 2008

Unexpected facts and the sources behind them.

Compare in the tracker How these metrics are definedr/todayilearned on Reddit
4.7Mweekly visitors · 28-day average, observed Oct 2, 2026
41.7Mmembers · observed Sep 28, 2026
82.1Kcontributions · week ending Sep 27, 2026
Since 2021membership records in the public showcase

Fixed weekly detail

Weekly activity in r/todayilearned

Compare complete weeks of contributions and contributors across their displayed periods.

Weekly contributionsPublic posts plus comments, r/todayilearned
latest 82.1Kweek ending Sep 27, 202652-week average 61.2K
41.3K52.7K64.2K75.6K87.1KSep 25Dec 25Mar 26Jun 26Sep 26Weekly contributionspeak 82.1K · Sep 27, 202641.3K64.2K87.1KSep 25Mar 26Sep 26peak 82.1K · Sep 27, 2026

Each point is a complete Monday–Sunday UTC total, dated by the Sunday it closed. Oct 5, 2025 – Sep 27, 2026.

Weekly contributorsUnique accounts contributing, r/todayilearned
latest 29.6Kweek ending Aug 30, 202652-week average 30.9K
22.8K26.8K30.9K34.9K39KSep 25Dec 25Mar 26Jun 26Aug 26Weekly contributorspeak 37.2K · Apr 26, 202622.8K30.9K39KSep 25Mar 26Aug 26peak 37.2K · Apr 26, 2026

Each point is a complete Monday–Sunday UTC total, dated by the Sunday it closed. Sep 7, 2025 – Aug 30, 2026.

RisingActivity pattern

Contributions and the number of contributing accounts in r/todayilearned both trend upward across their displayed periods.

Activity range
1.24×
Busiest four-week period relative to the quietest, after removing the trend. A ratio of 2.5× or more indicates concentrated activity.
Contributions
+23.4%/yr
Annualized trend across the displayed contribution period, using a robust fit that reduces the influence of individual spikes.
Contributors
+24.2%/yr
Trend in distinct contributing accounts across the displayed contributor period. Rising or cooling requires agreement between both measures.

Reach and participation

Visitors and contributions

Compare audience reach with participation over the shared period. Visitor counts are smoothed over 28 days, so short bursts can appear later and less sharply.

Reach × participationWeekly visitors and weekly contributions, one timeline
Visitors · left scaleContributions · right scale
4.5M5M5.6M46.3K64.2K82.1KSep 25Dec 25Mar 26Jun 26Sep 26Weekly visitorsWeekly contributions4.5M5M5.6M46.3K64.2K82.1KSep 25Mar 26Sep 26

Historical comparison through Sep 27, 2026. Visitors are a 28-day average; contributions are complete Monday–Sunday UTC totals. The two lines use separate scales, so compare their timing and direction rather than their heights.

The long view

Membership over time

Monthly member counts for r/todayilearned, from the first available month shown below.

Membership since 2021Members over time, r/todayilearned
41.7M+48.8% since Aug 21
28.9M34.8M40.8MAug 21Dec 22Mar 24Jun 25Sep 26Members28.9M34.8M40.8MAug 21Mar 24Sep 26

Latest available reading in each month. The vertical axis follows the observed range and does not start at zero.

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Compare nearby communities

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r/askscience26.4M members · full profiler/explainlikeimfive23.7M members · full profile

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