As a visitor in New Zealand, you can drive for up to 12 months from your arrival date with an overseas driving licence if you meet these criteria.
your overseas licence or driver permit is current and valid, and
you haven’t been given a disqualification or suspension in New Zealand, and
you arrived in New Zealand less than 12 months ago, and
your overseas driving licence is in English, or you have an accurate translation (like an International driving licence), and
you haven’t been granted a New Zealand driver licence since you last entered New Zealand.
More info about using a driving licence from an overseas country in New Zealand.
How to get an official driving licence translation in New Zealand
You can get an online official translation of your overseas licence. It's easy to do it online yourself via Driver Licence Translation, which provides New Zealand Transport Agency Approved Driver Licence translations.