Cost of living in Basel (Switzerland) is 32% more expensive than in Aarhus (Denmark)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 544 prices entered by 71 different people.
For example, you would need at least kr35,615 (CHF 5,570) in Basel to maintain the same standard of living that you can have with kr27,000 in Aarhus.