it depends where you send it to
You can use forever stamps on the letter. It is worth 44 cents toward the cost. You must put additional postage on the envelope.
$1.05 = Forever stamps are worth 45 cents each. so a little more than two of these stamps
47 cents, or one Forever stamp.
3 Forever Stamps should work just fine.
To send a letter to Germany using a forever stamp from the United States, you would need to use one forever stamp, which is equivalent to the current first-class postage rate for international mail.
You need $0.98 to send a letter to china, every foever stamp is $0.46 now. You can either use 3 forever stamps or use two and another 10cent stamp.
TWO US Forever stamps will suffice (USA to London post card)
The Forever Stamps can be used to send one ounce of First Class Mail anywhere in the United States.
If it's a regular first-class regular letter, 45 cents worth of stamps for one ounce of mail or one Forever Stamp.
One Forever stamp, as long as its no more than one ounce.
A Regular 'Forever' stamp is adequate to send a regular weight letter from Illinois to Delaware. However, if the letter is heavier than normal, several stamps should be used, and the post office worker will be able to tell you how many based on the weight.