New Zealand is about 71 times bigger than Sydney.

Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, while New Zealand is approximately 268,838 sq km, making New Zealand 6,957% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. New Zealand uses the Mercator projection, which distorts the size of regions near the poles.
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