Channel · @cognitoedu
Cognito
A course from this channel is on Best free GCSE and A-level revision courses on YouTube, ranked by total hours
Total watch time
2d 45m
at 1× speed · exactly 2 days, 45 minutes, 17 seconds at 1×
Next time, skip the copying: change youtube.com to playlistduration.com in any playlist, video or channel address and it opens here.
Uploads by year
8 years
| Year | Videos | Watch time | Average |
|---|---|---|---|
| 2026 | 99 | 8h 40m | 5m 15s |
| 2025 | 241 | 21h 10m | 5m 16s |
| 2024 | 2 | 5m 16s | 2m 38s |
| 2022 | 11 | 1h 5m | 5m 56s |
| 2021 | 46 | 5h 31m | 7m 11s |
| 2020 | 127 | 10h 45m | 5m 4s |
| 2019 | 16 | 1h 15m | 4m 41s |
| 2018 | 3 | 14m 26s | 4m 49s |
Playlists (12)
Every public playlist on the channel — open one for its full breakdown
Lengths are calculated on demand so this page stays fast.
| # | Playlist | Videos | Length |
|---|---|---|---|
| 1 | Psychology | 27 | length → |
| 2 | Cognito US - High School Science | 17 | length → |
| 3 | Alevel Physics | 0 | length → |
| 4 | Alevel Chemistry | 0 | length → |
| 5 | KS3 Physics | 8 | length → |
| 6 | KS3 Chemistry | 14 | length → |
| 7 | KS3 Biology | 19 | length → |
| 8 | A-Level Biology | 77 | length → |
| 9 | GCSE Maths (9-1) | 126 | length → |
| 10 | GCSE Chemistry (9-1) | 78 | length → |
| 11 | GCSE Physics (9-1) | 88 | length → |
| 12 | GCSE Biology (9-1) | 94 | length → |
Longest uploads
Top 5 · 1h 49m and down
- GCSE Maths Walk Through (2018 Edexcel Higher Tier Paper) · 1:48:51 · 2021-01-31
- How are Proteins Made? Transcription & Translation · 11:21 · 2020-03-15
- A-Level Biology - Human Gas Exchange System - Structure | Adaptations (2027/28 exams) · 9:51 · 2026-01-12
- A-Level Biology - Haemoglobin - Oxygen Dissociation Curve | Bohr Effect (2027/28 exams) · 9:44 · 2026-02-02
- Kingdoms of Life - Animals, Plants, Fungi, Protoctists, Bacteria and Viruses · 9:43 · 2021-02-14
For your README
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Data from the YouTube Data API as of 2026-10-22 (cached). Uploads are counted newest first; private, deleted and live videos are excluded from totals.