That depends on where you are mailing it FROM.
$1.00
A one ounce letter will cost you $.49 to mail. The fee for mailing a letter just increased in January.
You can use regular postage stamps, but it will cost more to mail a letter outside the US. The cost to mail something from USA to England depends on what you are trying to mail. It costs $1.10 for a one-ounce letter. See related links for Postage Price Calculator to see what it would cost to mail other size items and packages.
In the US it would cost 61 cents to mail a two ounce letter. It is 44 cents for the first ounce and 17 cents for each additional ounce.
A 2 ounce letter costs $1.10 to mail from New Jersey to Ontario, Canada. A 4 ounce letter costs $2.65.
The rate was 20 cents in 1982. That was for the first ounce of mail. A second ounce was 17 cents.
0.98
From where?
In the U.S., 66 cents for first class mail, provided the letter is within allowable dimensions.
$0.45 cents
The cost to mail a first class letter to the Bahamas from the US is .65 cents. Air mail that is one ounce or less is $1.10.
As of my last update, the cost to mail a 6-ounce letter within the United States using First-Class Mail is typically based on the weight and size of the letter. For a letter weighing more than 1 ounce, the price increases incrementally. You would need to check the current USPS rates for the exact cost, which can vary based on factors such as destination and service type.