Germany is approximately 357,022 sq km, while Lithuania is approximately 65,300 sq km, making Lithuania 18.29% the size of Germany. Meanwhile, the population of Germany is ~80.2 million people (77.4 million fewer people live in Lithuania).
This to-scale map shows a size comparison of Germany compared to Lithuania. For more details, see an in-depth quality of life comparison of Lithuania vs. Germany using our country comparison tool.