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there is .25 oz or 2.5t to an envelope of dry yeast
how much postage for a 9x12 envelope weighing 6.6 ounces
As of 2016, a 2.5 ounce envelope it would cost 93 cents (one Forever stamp plus two extra ounces).
After 3.5 ounces, the item moves up to large envelope rates. The current rate as of 2016 for an 11 ounce large envelope is $3.18.
how much postage required for a 9x12 envelope weighing 4.6 ounces
For an envelope that weighs 5 ounces, you would need 5 Forever stamps. Forever stamps are typically for 1-ounce letters, so you would need to use multiple stamps to cover the additional weight.
The first ounce will cost 44 cents. Each additional ounce, or fraction, is another 17 ounces. That would be 78 cents for that envelope at the start of 2011.
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How much does it cost to send a padded envelope to canada weighing 9 ounces
A typical 5x7 photo print weighs around 0.4 to 0.5 ounces, while a standard envelope for that size picture adds approximately 0.5 ounces. Therefore, the total weight of a 5x7 picture and envelope combined is roughly 0.9 to 1 ounce. This can vary slightly depending on the thickness of the paper and the envelope material.
The first ounce or less: 44 centsMore than one ounce but not over 2 ounces: 61 centsMore than two ounces but not over 3 ounces: 78 centsMore than three ounces but not over 3.5 ounces: 95 centsIf over 3.5 ounces, the letter is subject to the large envelope rate.As you letter weighs 4 ounces, but less than 5 ounces, it is subject to the large envelope rate. The large envelop rate for four ounces is $1.39. Which means you will need to use 4 forever stamps (44 cent stamps).
Since the envelope is 5.25 X 5.25 inches square, the postage is .70 cents for first class. This rate is for an envelope that weighs .5 ounces. The postage may be higher depending on the weight of the envelope.