1 mcg vitamin D (cholecalciferol) = 40 IU
Let´s say you have 300 IU of vitamin D: 300 / 40 = 7,5 mcg vit. D
Then you would have to convert 7,5 mcg to mg: 7,5 / 1000 = 0,0075 mg vitamin D.
Ans: 0.3 mg = 1,200 i.u...... 1 mg = 40,000 iu
http://www.robert-forbes.com/resources/vitaminconverter.html
Is a 1000 IU Vitamin D the same as 1000 mg of Vitamin D
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
1000 IU Vitamin D = 25 mcg Vitamin D = 0.025 mg Vitmain D. to convert IU of vitamin D divide by 40 to get mcg, divide by 40,000 to get mg. The minimum daily requirements for vitamin D have been markedly increased recently, and there is great confusion since the commercial products are still labeled as IU (International Units) while the research papers are stated in units of ug (micrograms) and mg. I spotted many unanswered questions regarding this conversion factor. *I need conversion to/from a measure that looks like ug, where the u has a tail like a lower case p. Is this the same as IU or what? How much is 100 u(plustail)g Vitamin D?
There is no direct conversion between milligrams (mg) and International Units (IU) for vitamin D because they measure different aspects of the nutrient. However, a common conversion for vitamin D3 is 1 microgram (µg) = 40 IU. So, you would need to convert the 1.25 mg dosage to micrograms and then calculate the equivalent IU based on this conversion factor.
1 IU is the biological equivalent of about 0.667 mg d-alpha-tocopherol (2/3 mg exactly), or of 1 mg of dl-alpha-tocopherol acetate
To convert milligrams (mg) to international units (IU), you need to know the specific substance's conversion factor, as different substances have different potencies. For example, 70 mg of vitamin E is approximately 104 IU, while 70 mg of vitamin D is about 2800 IU. Without knowing the specific substance, it's not possible to provide a direct conversion from 70 mg to IU.
400 IU of vitamin D is equivalent to 10 micrograms (mcg) or 0.01 milligrams (mg).
15 I.U. Vitamin E = 10mg, so 400 I.U. would =266.67 mg. (400/15x10=266.67). The World Health Organization sets the I.U. (International Units) for some medications, and vitamins, each of these has a different I.U. to mg ratio, and you have to find a reference to this ratio to be able to convert I.U to milligrams. It depends on hat the Vitamin E is as, example dl-alpha tocopheryl or dl-alpha tocopheryl acetate, check the chart on the following link for more info
An International Unit (IU) is a standardized measurement used to quantify vitamins A, D, and E. The conversion to micrograms (mcg) or milligrams (mg) varies for each vitamin. For vitamin A, 1 IU is equivalent to 0.3 mcg retinol. For vitamin D, 1 IU is equivalent to 0.025 mcg cholecalciferol. For vitamin E, 1 IU is equivalent to 0.67 mg tocopherol.
The conversion factor for International Units (IU) to milligrams (mg) varies depending on the substance being measured. For Vitamin D, the conversion factor is typically 40 IU to 1 mcg (microgram) or 1000 IU to 25 mcg. Therefore, to convert 500,000 IU of Vitamin D to milligrams, you would divide by 40 to get 12,500 mg or divide by 25 to get 20,000 mg, depending on the specific conversion factor used.