How many stamps to put a envelope?

I want to mail off something and I don't know how many stamps to put on the envelope according to the weight and don't want to go to the post office to get it weighed. Is there any other way I can tell how many stamps to put on the envelope?

I know the cost is 42cents, but can you put as many stamps as you want on an envelope, as long as it equals 42 cents? Like could i put 21 of 2cent stamps on an envelope and the usps take it? thanks, best answer shall be chosen next day or asap.

Ok... I can't go to the post office, I won't have time so I have to leave the envelope in my mailbox... but obviously, I don't know the weight. It's a standard letter envelope, it's gonna have card stock instead of paper (but the length and height is...

I am sending a money order in a envelope to Rochester, NY from New Jersey. I have a lot of 39 cent stamps. How many 39 cent stamps do I need to put.

How much are stamps? And how many do you put on the envelope? Let's say it ways about an ounce and being shipped to Arizona.

I am waiting for a document to arrive that I need to post as soon as possible because it has to arrive at an office by Friday. It is a large brown envelope, paper thin, weighs under 250 grams. How many first class stamps should I put on it? 1? 2? I have...

ok so obviously i don't have much experience in the snail mail category but I I want to send a letter with semi-thick computer paper and a pathetic plastic heart about an inch long and a 2 centimeters high... how many stamps should I put on the envelope...

okay..so it's a manilla envelope with a cotton t-shirt and a neclace in it. how many stamps would you put on this? or if i weigh it how much per ounce?

I am mailing in all my applications to colleges right now and I have no idea how many stamps I am supposed to put on every envelope. I am mailing them all inside the US, but do I need ...show more