The diff between IELTS and TOEFL is mainly in how they are taken and scored. IELTS can be paper-based or computer-based and has a face-to-face speaking part, while TOEFL is only computer-based and you speak into a microphone. IELTS scores are on a 9-band scale, and TOEFL scores are out of 120. Both tests are accepted worldwide, but some students find one format easier than the other.