Conversion Definitions
The following is a list of definitions relating to conversions between micrograms and milligrams.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from micrograms to milligrams (mcg to mg).
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Convert vitamin A IU to mcg RAE
RAE. Ever heard of it? It’s a “retinol activity equivalent” and it’s the new way we talk about vitamin A. 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. Converting vitamin A from IUs into the new “RAE” unit is easy.
Convert vitamin D IU to mcg
Most people are used to talking about vitamin D in IU, and that’s not a bad thing. Actually FDA still allows the use of the IU in parentheses on the supplement facts panel. However, not every company is going to do that, so here is how you calculate. Just take the IU and divide it by 40. For example:
Convert vitamin E IU to mg
Vitamin E is a little more complicated than the other vitamins to go from IU to mg. However, as long as you know whether you are dealing with synthetically-derived or naturally-sourced vitamin E it’s quite easy.
Convert mcg folic acid to mcg DFE folate
What’s a DFE you might ask? It’s a “dietary folate equivalent.” This is a unit of measure that’s been developed to better equate the biological effects of the folate found in food compared to the synthetic sources of folate such as folic acid and methylfolate.