Yes, according to the USPS "Frequently Asked Questions" site:
Can Forever stamps be used for international mail?
Customers can use Forever stamps for international mail, but since all international prices are higher than domestic prices, customers will need to attach additional postage. The value of the Forever stamp is the domestic First-Class Mail one-ounce letter price in effect on the day of use.
http://faq.usps.com/eCustomer/iq/usps/request.do?create=kb:USPSFAQ&view%28%29=c[c_uspsse10242011]&varset%28source%29=sourceType:embedded
Since "forever" stamps (as of Jan 2012) are worth 45 cents, and mail to Canada costs 85 cents (as of Jan 2012), you can use two "forever" stamps on the mail to send it to Canada.
You need 1 stamp to mail a letter/package throughout Canada
Currently as of 2011, it costs 59 cents.
You cannot use the Forever Stamps on foreign postage. The international agreement indicates that value must be shown on stamps used for international mail. The current cost for up to one ounce is 98 cents.
As of October 2011, Canada Post domestic lettermail costs $0.59
For a letter of no more than 3-6 pages, one first class stamp, 45 cents worth of stamps for one ounce of mail or one Forever Stamp.
You can use forever stamps on a letter to Canada. It is worth only 44 cents toward the cost. You must put additional postage on the envelope.
how many forever stamps = .94
No you cannot use them. Forever stamps can only be used for domestic (inside the US) mail. They must have a value on them for international mail.
75 cents is the cost of sending an ordinary letter to Canada from the US.
it depends where you send it to
For a regular letter, two.
it takes at least 4 forever stamps and about ten regular stamps :d whats in india?? lol
typicaly 2 stamps
One. From USPS web site: "Forever Stamps can be used to mail a one-ounce letter regardless of when the stamps are purchased or used and no matter how prices may change in the future.
No, you may not. Forever stamps, because they do not contain a value, cannot be used for international mail.
You need 1 stamp to mail a letter/package throughout Canada
45 cents worth of stamps for one ounce of mail or one Forever Stamp.