Cost of living in Yokohama (Japan) is 7% more expensive than in Aarhus (Denmark)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 418 prices entered by 43 different people.
For example, you would need at least kr30,039 (¥516,025) in Yokohama to maintain the same standard of living that you can have with kr28,000 in Aarhus.