New Caledonia is approximately 18,575 sq km, while New Zealand is approximately 268,838 sq km, making New Zealand 1,347% larger than New Caledonia. Meanwhile, the population of New Caledonia is ~290,009 people (4.6 million more people live in New Zealand).
This to-scale map shows a size comparison of New Caledonia compared to New Zealand. For more details, see an in-depth quality of life comparison of New Zealand vs. New Caledonia using our country comparison tool.