The most famous test is the JLPT (Japanese Language Proficiency Test), but many people also take the J-TEST, BJT, and others. So here is a summary of them including what it measures, how it is divided into levels, the cost, and the features.
Comparison of Japanese tests

Please check the official website for details and the latest information.
JLPT(Japanese Language Proficiency Test) http://www.jlpt.jp/
J-TEST (Practical Japanese Language Test) http://j-test.jp/
BJT (Business Japanese Proficiency Test) http://www.kanken.or.jp/bjt/

Please also refer to the article “Should I take the JLPT?

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