As we celebrate the 235th birthday of our great nation, we asked a number of community leaders to share their thoughts on what the Fourth of July means to them. The Fourth of July reminds me very simply of our freedom.
Vitamin A: 1 IU is the biological equivalent of 0.3 mcg retinol, or of 0.6 mcg beta-carotene. 1  Vitamin D: 1 IU is the biological equivalent of 0.025 mcg cholecalciferol or ergocalciferol. 2  Vitamin E: 1 IU is the biological equivalent of 0.67 mg d-alpha-tocopherol, or 0.9 mg of dl-alpha-tocopherol.
Last updated: 13 February 2014. One of the most common conversion enquiries from visitors to this website is about converting between International units (ui) and micrograms (mcg) and milligrams (mg) . Commonly, people want to work out the amount of micrograms or milligrams in a medication or vitamin supplement.I think that people wonder why the International unit isn't in the lists featured in the mass and weight converter. The reason for this is that the conversion isn't as simple as one might think.ommonly, people want to work out the amount of micrograms or milligrams in a medication or vitamin supplement. I think that people wonder why the International unit isn't in the lists featured in the mass and weight converter. The reason for this is that the conversion isn't as simple as one might think.