The cost to send a 4-inch by 4-inch envelope in the U.S. typically falls under the United States Postal Service's (USPS) First-Class Mail category. As of my last update, the minimum postage for a First-Class Mail letter starts at $0.66 for envelopes weighing up to 1 ounce. Prices can vary based on weight, size, and any additional services such as tracking or insurance. It's best to check the USPS website or your local post office for the most current rates.
Just multiply the three numbers. The result will be a volume, in cubic inches.
area of envelope = l Xb =8.5 X11 =93.5 inch^2
The cost will depend upon the size and also the weight of the envelope. Also if it is first class or second class mail, and the country you live in. If you are in UK you can go to Royal Mail website and get the exact price of the cost but you need the weight of the envelope.
One
An envelope with a height exceeding 6 and one-eighths inches, and any square envelope, is non-machinable. Therefore, the rate for first class US domestic postage is $.64.
Depends om where you are sending from, where to, how much the envelop weighs, whether or not it is first class/express, whether it needs to be be insured or signed for, etc.
The cost to mail a manila envelope will depend on the size of the envelope and the weight of the envelope. The average cost to mail a manila envelope that is 8"X11" is about $2 if the contents weigh less than one pound.
One Forever stamp, or 47 cents.
That depends entirely on which country you are in and where you are mailing it to
5.25 X 5.25 envelope
A 6x8 inch padded envelope will require approximately $3.00 for up to 13 ounces. The USPS website offers the tools for all calculations based on weight and envelope dimensions
2.05