Thailand is approximately 513,120 sq km, while Lithuania is approximately 65,300 sq km, making Lithuania 12.73% the size of Thailand. Meanwhile, the population of Thailand is ~69.0 million people (66.2 million fewer people live in Lithuania).
This to-scale map shows a size comparison of Thailand compared to Lithuania. For more details, see an in-depth quality of life comparison of Lithuania vs. Thailand using our country comparison tool.