For example:Ĥ00 IU of vitamin E as d-alpha * 0.67 = 268 mg vitamin EĢ68 mg vitamin E as d-alpha / 0.67 = 400 IU vitamin E If it’s a naturally-sourced vitamin E, you will see it called “d-alpha.” If you see “d-alpha” on the label, just multiply the IU by 0.67. For example:Ĥ00 IU of vitamin E as dl-alpha * 0.45 = 180 mg vitamin Eġ80 mg vitamin E at dl-alpha / 0.45 = 400 IU vitamin E

If you see this form, you just multiply the IU by 0.45. The most common form of vitamin E is the “dl-alpha tocopherol” form. However, as long as you know whether you are dealing with synthetically-derived or naturally-sourced vitamin E it’s quite easy. Vitamin E is a little more complicated than the other vitamins to convert IU to mg. For example:įor more information on vitamin D, including how much you should take daily, check out our recent post. To convert from IU to mcg, just take the IU and divide it by 40. However, not every company is going to do that, so here is how you calculate. Actually, FDA still allows the use of the IU in parentheses on the supplement facts panel. Most people are used to talking about vitamin D in IU, and that’s not a bad thing.

For example:ģ000 IU vitamin A * 0.3 = 900 mcg RAE vitamin Aĩ00 mcg RAE vitamin A / 0.3 = 3000 IU vitamin A We are just converting the IU to mcg or “micrograms.” All you need to do is take the IU and multiply by 0.3 and you will get the mcg RAE. Converting vitamin A from IUs into the new “RAE” unit is easy. Basically vitamin A is important because it’s a source of a molecule called “retinol.” This is the active ingredient that your eye uses to process light. Ever heard of it? It’s “retinol activity equivalent” and it’s the new way we talk about vitamin A.

125 mcg to iu