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?
The conversion from milligrams (mg) to international units (IU) depends on the substance being measured, as different substances have different potencies. For example, 1 mg of vitamin D is equivalent to 40 IU, while 1 mg of vitamin E is equivalent to about 1.49 IU. Therefore, to convert 10 mg to IU, you need to know the specific substance and its conversion factor.
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.
To convert International Units (IU) to milligrams (mg), you need to know the specific substance, as the conversion factor varies. For example, 1 IU of vitamin D is equivalent to 0.025 mcg (or 0.000025 mg), so 1,200,000 IU of vitamin D would be approximately 30 mg. For other substances, the conversion would differ, so it's essential to refer to specific conversion factors for accurate results.
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