Miscellaneous Nutrient Information
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 |