France is approximately 551,500 sq km, while Iceland is approximately 103,000 sq km, making Iceland 18.68% the size of France. Meanwhile, the population of France is ~67.8 million people (67.5 million fewer people live in Iceland).
This to-scale map shows a size comparison of France compared to Iceland. For more details, see an in-depth quality of life comparison of Iceland vs. France using our country comparison tool.