New Caledonia is approximately 18,575 sq km, while China is approximately 9,596,960 sq km, making China 51,566% larger than New Caledonia. Meanwhile, the population of New Caledonia is ~290,009 people (1.4 billion more people live in China).
This to-scale map shows a size comparison of New Caledonia compared to China. For more details, see an in-depth quality of life comparison of China vs. New Caledonia using our country comparison tool.