Take it to the post office. If they give you a weight in ounces, multiply it by 28.35, and that's the weight in grams.

I believe that you are asking about the return postage cost.
The weight of the envelope is small compared to your two photos.

I would put the same outgoing postage on the return envelope.

Does this help?

[quote="newwave"]I usually send an 8x10, a letter, and a SASE inside an identically sized outer envelope, and it weighs between 1 and 2 ounces.
I would estimate about 2 ounces, but they will weigh it at the post office for free.[/quote]
Hello there thanks for the info but i was wondering how heavy it would be with only 2 photos and the envelop it self not sase or lor do you think it will weigh less then 25 grams ?? cheers

I usually send an 8x10, a letter, and a SASE inside an identically sized outer envelope, and it weighs between 1 and 2 ounces.
I would estimate about 2 ounces, but they will weigh it at the post office for free.

Hey i am fairly new to the site and i was just wondering if some one could give me a hand.
the question is how much would 2 7x5 photos in my sase weigh any help would be much appreciated i really have to know before i send my request out because i am trying to work out shipping costs from USA to Australia.

Thanks