Can I use US stamps in Canada?

i have tons of those 61 cents stamps for mailing within canada, but not enough for a lettter to usa they are 1.05 . i was wondereing if i could stick on 2 of the whitin canada stamps for aletter to usa since its the same amount. and will they return...

Okay, letter-posts stamps to the USA is worth CAD 1 while local stamps are CAD 0.57. What if I used 2 local stamps (CAD 0.57 each) to make CAD 1. I know there's an excess 14 cents ...show more

I got conflicting info from different post office people. One said I can't use two "Forever" stamps (the ones for domestic mails without denomination value shown) to send letter to Canada, the other said I can. Who's right?

im sending a letter to the u.s from canada, but inside im sending a returning self addressed enveloped with the canada stamps would that be right? or am i doing something wrong... dont mind the category, i have no idea what to put it under

I'm an American going on a trip to Canada and would like to bring stamps to use to mail postcards to friends back home rather than try to find a place to buy them there. Thanks.

I'll be taking a ride with a few friends to Canada, and i was wondering if i could use my card to purchase food while there. If not, is it ok to bring a weekend amount of food across the border?