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.
the ratio varies for different compounds. Vitamin D compounds have several chemicals including Vitamin D2 and D3. For vitamin D3 0.025 mcg = 1 IU or 1 mg = 40000 units, it is eventually is made into calcitriol but not all of it. so, effectively 0.025 mcg of calcitriol (brand name rocaltrol) is more than 1 IU of Vitamin D compound.
The mass of an international unit varies for different substances, so you must first know what substance you are talking about, then look up the equivalent for that particular substance.
200 iu calcium to mg
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?
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
1.25 mg is the equivalent of 50,000 IU.
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
50000 iu
A huge number. Doses of vitamin D are usually measured in mcg (micrograms), not mg (milligrams). You would have to take eight hundred thousand 5000 IU tablets of vitamin D to be one hundred thousand MG. That's 800,000 5000 iu tablets of vitamin D = 100,000 mg. Even if you mean micrograms (mcg) it would require eight hundred (800) 5000 iu tablets of vitamin D to be 100,000 mcg. 800 5000 iu tablets of vitamin D = 100,000 mcg.
You likely meant 1000 IU of D. The tolerable upper limit of D is much higher than 1000 IU.
To convert mcg to mg: Divide by 1000 OR multiply by 0.001 OR move the decimal 3 places to the left (they all mean the same thing), so 500mcg = .5mg. Similarly, 1000mcg = 1mg, 2500mcg = 2.5mg, etc. AND to convert in the opposite direction, mg to mcg, multiply by 1000, so 3mg = 3000mcg, 1.5mg = 1500mcg, etc.