Which one is easier, IELTS or TOEFL? How much time is required for the preparation if I have good English?

It also depends what your needs are. If you want to study abroad check the entry requirements of the university you wish to study at.

To decide which one is easier, you have to know difference between these two exams. Once you will know difference, you will figure out which one is easier for you. While both TOEFL and IELTS, are aimed at checking your proficiency in English, there are a ton of differences between these two tests. The differences are both subtle and obvious. Both the standardized tests use reading, writing, listening and speaking as the yardstick for measuring your fluency in the said language.