An international unit (IU) is NOT a fixed amount of micrograms. It is a measure based on the effect of a substance, so the same amount of IUs can be equivalent to different amount of micrograms, for different substances.
2400mg
4mcg
1 IU vitamin A Palmitate = 0.55 mcg Ex: 100 IU vitamin A Palmitate = 55 mcg ie multiply the IU by 0.55
1000 mcg per 100 IU
30.12 mgFom IU to mcg: 50000 IU/1.66 = 30120 mcgFrom mcg to mg: 30120 mcg/1000 = 30.12 mg Final AnswerFrom USDATo convert Vitamin A as beta-carotene:From IU to mcg: IU/1.66 = mcgFrom mcg to IU: mcg * 1.66 = IUSource http://dietarysupplementdatabase.usda.nih.gov/ingredient_calculator/help.php#q2Ther are 1000 mcg in a mg so to convert to miligrams you have to divide the micograms by 1000.
2400 IU is 50μg.
5000
100,000 IU
one mcg = .344 iu one mg = 1000 mcg one g = 1000 mg
how can convert 100 mcg B12 in mg
10,000 IU of vitamin A is equivalent to 3,000 mcg.
10000
3500 IU is equal to 1050 mcg (microgram) retinol (Vitamin A)
Keep in mind that conversions from IU to mg are specific for each vitamin, so this formula/answer is only applicable for Vitamin D. You first have to convert the 2,000 IU into mcg. Each IU of Vitamin D is equal to 40 mcg, so you divide 2,000 by 40 which equals 50. Then you have to convert the mcg amount into mg which you do by dividing the mcg amount by 100. In this case 50 divided by 100, which equals 0.5, which means that 2,000 IU of Vitamin D is 0.5 mg