Cost of living in Tsukuba (Japan) is 19% 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 167 prices entered by 17 different people.
For example, you would need at least €3,222 (¥414,574) in Tsukuba to maintain the same standard of living that you can have with €2,700 in Zaragoza.