Iodized sea salt

Does anyone have any idea how much iodine is in iodized sea salt?

“Though it can be difficult to determine the exact amount of iodine in sea salt because it isn’t included on nutrition facts labels, many iodized salts contain about 71 micrograms in each 1/4-teaspoon portion, according to the Office of Dietary Supplements.”


What the hell is that in grams?

Simply googling this brings up a value of 1.42 grams for 1/4 teaspoon of salt.