Germany is approximately 357,022 sq km, while Brunei is approximately 5,765 sq km, making Brunei 1.61% the size of Germany. Meanwhile, the population of Germany is ~80.2 million people (79.7 million fewer people live in Brunei).
This to-scale map shows a size comparison of Germany compared to Brunei. For more details, see an in-depth quality of life comparison of Brunei vs. Germany using our country comparison tool.