Comprehensible input · English

Comprehensible input in English

1,777 videos from 17 channels, each scored from its own subtitle track — vocabulary load and speaking pace. Filter to your level, then watch it on YouTube.

1,777
videos scored
17
channels
1,435 h
of material
591
made for learners

Find something to watch

The number on each thumbnail is its difficulty score out of 100: mostly speaking pace, partly vocabulary load. How it is measured →

English channels, ranked

Ranked by median difficulty, easiest first. The bar is a range, not a label — a channel typically spans a wide stretch of the scale, so one level would be false for its own hardest videos.

#ChannelLevel range (0–100)MedianTypical bandPaceVideosHours
1TED-Ed279150C1-C2medium19119 h
2National Geographic278957B2-C2medium6581 h
3TED228758B2-C2fast6916 h
4Kurzgesagt – In a Nutshell138868B2-C2fast6013 h
5Lex Fridman278970B2-C1fast127377 h
6Yes Theory288772B1-B2fast9048 h
7WIRED269177B2-C2fast7328 h
8Vanity Fair389178B1-B2fast9628 h
9The Diary Of A CEO389279B1-B2fast152316 h
10PowerfulJRE409081B1-C1very fast99269 h
11The Tonight Show Starring Jimmy Fallon408984B1-B2very fast306 h
12MrBeast759487B1-B2very fast9234 h
13Mark Rober729589B2-C1very fast4315 h
Watching is the other halfYouTube gives you one subtitle line, in one language. Linglass puts English and your own language on screen together, and turns any word you tap into a flashcard.Add to Chrome — free