$0.72 for a first class letter. If it's Priority or Express it will be more. This might help:
http://www.usps.com/international/
The required postage for a first class letter from California to Florida is one stamp. As of 2014, a stamp costs approximately $0.49.
If I calculated correctly, it should be $1.20.
The amount of postage to mail a letter to Ontario, Canada varies greatly based on the origin of the letter and its weight. A letter sent inside Ontario will typically cost around 85 cents.
how much postage for 1 ounce letter from Cherry Hill New Jersey to Ontario Canada
That would depend on the weight of the letter. Postage is 42 cents per ounce, with each additional ounce requiring more postage. Your local post office can weigh it for you. Or if you have postal scales you can weigh it, then call your post office, tell them how much the letter weighs, and get them to tell you how much postage it will need.
The postage rate for a letter in Canada that goes to any part of Canada is 46 cents. This is providing that the letter does not weigh over 20grams.
$1.05
96 cents
44 cents
That depends on where you post it from and what postage you send it by!
what is the required postage from california to canada for a letter?
Yes, you have to prepay postage with a stamp even on a local letter. The PO no longer delivers w/o postage.