CVLA: CEFR-based Vocabulary Level Analyzer (ver. 1.1)

[Feb. 19th, 2021]
Version 2.0 is available here. This version functions faster (using Python libraries) and the results are shown per sentence. Your feedback is truly appreciated. (kyudai.uchida.lab[at]
[March, 1st, 2021]
Our new paper titled "英語読解教材のCEFRレベルの推定―CVLAの妥当性評価―" (Estimating the CEFR Levels of English Reading Materials: Evaluation of CVLA) was published. [Link]

CVLA assigns CEFR levels to the words based on CEFR-J Wordlist (Created by Y. Tono). An estimated level of the input text is displayed based on 4 textual features. See the "Explanation" tab for details which appears after submission. This website is created by Satoru UCHIDA. Special thanks go to Tetsuya NAKATOH, who takes care of the server for this program.

Uchida, S. and M. Negishi (2018) Assigning CEFR-J levels to English texts based on textual features. In Y. Tono and H. Isahara (eds.) Proceedings of the 4th Asia Pacific Corpus Linguistics Conference (APCLC 2018), pp. 463-467. [PDF]
内田諭・根岸雅史(2021)「英語読解教材のCEFRレベルの推定 : CVLAの妥当性評価」Journal of Corpus-based Lexicology Studies, 3, pp.1-14. [Link]

The password for conducting an analysis is "CVLA" (case-sensitive). Please enter this into the box at the bottom.

May 1st, 2018: Parameters for Reading were updated.
Feb. 19th, 2021: Version 2 released.

Input text