Calculations and Conversions
Dietary Reference Intakes – Unit Conversion Factors
|Folate||1 DFE = 1 µg food folate|
|Niacin||1 NE = 1 mg niacin
1mg NE = 60 mg tryptophan
|Vitamin A||1 RAE = 1 µg retinol = 3.33 IU retinol
For preformed vitamin A, 1 RE = 1RAE
|Vitamin D||1 µg = 40 IU|
|Vitamin E||1 IU natural or synthetic Vitamin E = 0.67 mg α-tocopherol equivalent (α-TE)
1 IU synthetic Vitamin E and esters = 0.45 mg α-tocopherol
1 IU natural Vitamin E and esters = 0.67 mg α-tocopherol
The information on this website is intended only for Canadian healthcare professionals and applies to products sold in Canada.
Formulations and mixing instructions for products sold in Canada and the laws and regulations governing such products may not be applicable to products sold in the country in which you practice. Please refer to the information on the label of the product you are preparing, as well as to the laws and regulations of the country in which you practice.