Greece is approximately 131,957 sq km, while Singapore is approximately 719 sq km, making Singapore 0.55% the size of Greece. Meanwhile, the population of Greece is ~10.6 million people (4.4 million fewer people live in Singapore).
This to-scale map shows a size comparison of Greece compared to Singapore. For more details, see an in-depth quality of life comparison of Singapore vs. Greece using our country comparison tool.