Cost of living in Tsukuba (Japan) is 22% 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 244 prices entered by 23 different people.
For example, you would need at least €3,177 (¥399,006) in Tsukuba to maintain the same standard of living that you can have with €2,600 in Zaragoza.