If you want to know the diff between TOEFL and IELTS, remember that TOEFL is mostly used for universities in the USA, and IELTS is used in many countries. In TOEFL, all parts are done on the computer, and you don’t talk to a person for the speaking test. In IELTS, you might talk to a real examiner. Both tests check your English skills, so pick the one that matches your comfort and your study plans.