Originally Posted by
mohitkirpalani
Is there a miles calculator that calculates, apart from how many miles are needed for a flight from A to B, but also how many miles are needed to upgrade your flight?
No calculation needed since all these are about using miles, either for award tix or upgrade.
Just visit the respective airline sites of your interest. Based on the origin & destination of your proposed award trip, you shall find the award charts and/or links that specify the needed miles.