Postage depends on which country you live in, how much the envelope and contents weigh, and where you are sending the envelope to. You'll need to include all that in your question to get the correct answer - or you could just go to your local postal website and get the answer from the experts...
It depends on the weight It depends on the weight
One 49-cent stamp should be all that is needed.
At that size and weight, it would cost $2.20 (as of 2016).
If it weighs up to one ounce and is rigid and not extra thick you can mail it for 88 cents ( two first-class stamps). If it weighs 2 ounces the cost is $1.08. If it heavier or thicker, it will cost more.
In the UK, it is not only the weight, but also the size and thickness of the envelope or package, and the destination (UK or abroad). It is best take take the envelope to a post office to ensure the correct postage is used.
I think you mean 9x12 envelope.
how many stamps for a 3.4oz envelope
I successfully mail CDs all the time with 2 stamps.
It depends on how heavy the contents are and how big the envelope is.
It depends on the weight It depends on the weight
3
As many as will fit. I have one envelope in my collection with 44 stamps on it! The sender used one cent stamps to mail it. Some people will overlap stamps to get more to fit, which is okay as long as the Post Office can plainly see that they are all there.
Depends all on the weight.
As of June 10, one ounce of first class mail is 44¢. Every additional ounce is 20¢. So, a six ounce envelope would cost $1.44 to mail, or four forever stamps.
my mom who is a postal worker says 2
You would have to use 2 stamps to get a small envelope from Florida to Canada. If you do not want to use stamps, you can take it to the post office and it will cost roughly 72 cents to mail it.
i believe the most you need is 3.