Usually it's two domestic stamps to send a letter overseas. But to send a package, you have to take it to the post office and have them weigh it.
you need to have the exact address and since you can't share that with us. here's a calculater to tell you how much it will cost you.
http://www.theupsstore.com/ctc/pages/est...
all you need to do is bring it to the post office and they will stamp it with exactly how much you need to spend. but use the calculater so you can get an amount of money to bring to the post office.
The United States Postal Service (USPS) bases pricing of mail on a combination of size, weight, shape, destination, item valuation, and class of service selected. USPS will let you send a regular letter sized envelope from a United States location to an International destination without a customs form.
https://www.usps.com/ship/first-class-in...
Using a sender selected envelope which does not exceed a maximum length of 11-1/2 inches, maximum height of 6-1/8 inches, or maximum thickness of 1/4 inch, USPS First-Class Mail International service will send a one ounce weight letter for $1.15. The price increases as the weight goes up. These examples are some actual postage prices to send a letter to Norway. One Forever Global stamp is worth $1.15, and will send an envelope containing one ounce to an International destination, but it will take three $.49 USPS Forever stamps to send that same one ounce envelope.
mailing 1 ounce - $1.15 (takes three Forever stamps)
mailing 2 ounces - $2.13 (takes five Forever stamps)
mailing 3 ounces - $3.12 (takes seven Forever stamps)
larger envelope - maximum length of 15 inches, height of 12 inches, and thickness of 3/4 inch
mailing 4 ounces - $5.10
mailing 5 ounces - $6.04
mailing 6 ounces - $6.97
mailing 7 ounces - $7.91
mailing 8 ounces - $8.85
mailing 9 ounces - $10.72
mailing 10 ounces - $10.72
mailing 11 ounces - $10.72
mailing 12 ounces - $10.72
mailing 13 ounces - $12.60
mailing 14 ounces - $12.60
mailing 15 ounces - $12.60
mailing 16 ounces - $12.60
If you can get to a local Post Office branch, they can weigh the envelope and apply the exact postage amount, saving you a little bit. You can also purchase from USPS an international rate Forever stamp, called 'Global: Sea Surface Temperatures', which is valued at $1.15 per stamp, and use it to send future letters or greeting cards.
https://store.usps.com/store/browse/usps...
Use the USPS Calculation page link below to determine the exact postage for the weight and size item you are mailing. Enter the destination, select using an envelope, a large envelope, or a box (package) for mailing, enter the weight, and get the correct postage amounts.
http://postcalc.usps.com/
To send to Norway a one pound package using USPS will have varying postal rates depending on the package size and the class of service selected.
First-Class Package International Service - one pound weight - $16.75
Customer supplied box
Maximum 24 inches L; combined length, height and depth less than 36 inches
Delivery date varies by destination within country
Value of contents can not exceed $400.00
---
Priority Mail International - one pound weight - $39.50
Customer supplied box - includes up to $50 of insurance
Maximum 42 inches L; combined length plus girth less than 79 inches
Delivery in approximately six to ten business days
Priority Mail International Large Flat Rate Box - $80.50
USPS Supplied Box - maximum shipping weight 20 pounds - two box sizes
23-11/16 inches L by 11-3/4 inches W by 3 inches D
12 inches L by 12 inches W by 5-1/2 inches D
Delivery in approximately six to ten business days
Priority Mail International Medium Flat Rate Box - $61.75
USPS Supplied Box - maximum shipping weight 20 pounds - two box sizes
13-5/8 inches L by 11-7/8 inches W by 3-3/8 inches D
11 inches L by 8-1/2 inches W by 5-1/2 inches D
Delivery in approximately six to ten business days
Priority Mail International Small Flat Rate Box - $24.75
USPS Supplied Box - maximum shipping weight 4 pounds
8-5/8 inches L by 5-3/8 inches W by 1-5/8 inches D
Delivery in approximately six to ten business days
you probably can't use US postage - you need to go to the usps website and use the "calculate a price " area
