Do I need to take an English test like IELTS, and can I try a free mock test in UK/New Zealand for a Master's?

Yes, you typically need to take an English proficiency test like IELTS, TOEFL, or PTE for master's admission in the UK, USA, New Zealand, and Germany. Most universities require an overall IELTS score of around 6.5, though requirements vary by institution and program. A waiver is sometimes possible if your previous education was in English, but this depends on the university.

You can try free IELTS mock tests online to assess your level and get familiar with the format.