What is the difference between grand_total and base_grand_total of the order?

Question

Can any one explain the difference between following attributes of the order?

grand_total base_grand_total

Any suggestions will be appreciated.

Answer 1

grand_total = current currency grand total

base_grand_total = store base currency grand total

Answer 2

So basically the following will applied for the base_ values and non base_ values according to this link as provided by Marius. Difference between Tax Amount and Base Tax Amount

Example : 

base_xxx -----------> default store currency

xxx ----------------> currency store currency