Cost of living in Tsukuba (Japan) is 25% more expensive than in Zaragoza (Spain)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 168 prices entered by 17 different people.
For example, you would need at least €2,751 (¥353,836) in Tsukuba to maintain the same standard of living that you can have with €2,200 in Zaragoza.