Book Difficulty Checker
Find out how hard any of 169 French, Spanish, and German classics is to read before you commit to it - vocabulary load, sentence length, and how much of the book a 2,000-word vocabulary already covers.
Open the toolFree tools
Free language learning tools
Small, honest tools for people learning French, Spanish, or German. No sign-up, no account, nothing to install. They run entirely in your browser, and everything they measure is explained on the page so you can judge the numbers for yourself.
CEFR Text Level Checker
Paste any French, Spanish, or German passage and get its CEFR level from A1 to C2, the words that will slow a reader down, and a hard-word list to hand out. Checked against 75,000 word families, entirely in your browser.
Open the toolWord Frequency Lists
The 15,000 commonest French, Spanish, and German words, ranked from real books and dialogue - each with its English meaning, part of speech, CEFR level, and how much of a book you cover once you know it. Download as CSV, an Anki deck, or print it.
Open the toolVocabulary Size Test
Five minutes to find out how many French, Spanish, or German words you know. Words are sampled from every frequency band and 960 of them are vetted or invented - the invented ones are what keep the number honest.
Open the toolWhat the data covers
76
French books, 5.7M words analysed, plus 25,000 word families ranked
45
Spanish books, 3.5M words analysed, plus 25,000 word families ranked
48
German books, 2.1M words analysed, plus 25,000 word families ranked
Found a book you want to read?
Photograph any page and Einlang turns it into vocabulary, grammar notes, and drills for that exact page - so you can read a book slightly above your level and still follow it.
Try Einlang free