5 as of January 18, 2013.
how many stamps for a 3.4oz envelope
The amount of stamps needed for an envelope is determined by weight. Weigh your a4 envelope and you will know how much postage is needed.
4
It depends on tne weight of the envelope not the size.
I think you mean 9x12 envelope.
5 as of January 18, 2013.
3
For an envelope that weighs 5 ounces, you would need 5 Forever stamps. Forever stamps are typically for 1-ounce letters, so you would need to use multiple stamps to cover the additional weight.
42 cents (10/2008)
For a 3.4oz envelope you will need to purchase 94 cents worth of stamps. If you go to a post office they will charge you 94 cents, place the stamps on it for you, and there is a drop box right there!
At that weight, it would be classified as a large envelope, and postage would be $2.20 as of 2016.
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...