Austria is approximately 83,871 sq km, while Denmark is approximately 43,094 sq km, making Denmark 51.38% the size of Austria. Meanwhile, the population of Austria is ~8.9 million people (3.0 million fewer people live in Denmark).
This to-scale map shows a size comparison of Austria compared to Denmark. For more details, see an in-depth quality of life comparison of Denmark vs. Austria using our country comparison tool.