IELTS is the acronym for International English Language Testing System and it is a widely accepted standardised test for proof of English language proficiency. Like most other language tests, the IELTS exam has four modules, namely: Reading, writing, listening and speaking. Although there is no minimum grade that is required to successfully pass the IELTS exam, there are 9 score-bands of grading from 1 for non-user to 9 for expert user. This IELTS Overall Score Calculator gives you the average of your grade from the four above-mentioned sections.