Methodology

Data source

All statistics come from the official YouTube Data API. We do not scrape YouTube. Figures are exactly what the API reports for each channel and video at the time we fetched them.

Refresh schedule

• Channel statistics (subscribers, views, video count): once a day.
• Videos under 7 days old, or gaining views quickly: once a day.
• Videos 7–30 days old: every 2 days. 30–90 days old: weekly.
• A channel's most-viewed older videos: at least every 28 days.
• New uploads are detected through YouTube's push notifications within minutes.

Rankings

Most Subscribers orders channels by their public subscriber count. YouTube rounds subscriber counts to three significant figures (for example 1.23M), so channels close together may show the same number. Channels that hide their subscriber count are not ranked.

Country filters use the market we assign to each channel, which starts from the country the channel declares on YouTube and is reviewed by our editors. Categories are editorial.

Data retention

Data obtained from YouTube is refreshed or deleted within 30 days, and daily history is kept for 30 days, in line with the YouTube API Services Developer Policies.