Cost of living in Nice (France) is 11% cheaper 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 730 prices entered by 55 different people.
For example, to keep the same standard of living that would require kr28,000 in Aarhus you would need to make just about kr25,012 (€3,354) in Nice.