Cost of living in Ottawa (Canada) is 11% more expensive than in Zaragoza (Spain)
This comparison has some inconsistent or sparse data. It already provides a reliable comparison but it is not bullet-proof. It is based on 960 prices entered by 171 different people.
For example, you would need at least €3,225 (C$5,057) in Ottawa to maintain the same standard of living that you can have with €2,900 in Zaragoza.