Austria is approximately 83,871 sq km, while Lithuania is approximately 65,300 sq km, making Lithuania 77.86% the size of Austria. Meanwhile, the population of Austria is ~8.9 million people (6.1 million fewer people live in Lithuania).
This to-scale map shows a size comparison of Austria compared to Lithuania. For more details, see an in-depth quality of life comparison of Lithuania vs. Austria using our country comparison tool.