Units of Measurement
Measurement
Abbreviation
Conversion
Grams
g
1000g = 1kg
1g
=1000mg
Milligrams
mg
1mg = 1000mcg
Micrograms
mcg or µg
1000mcg = 1mg
Milliliter
ml
1ml = 1000µl
Microliter
µl
1000µl = 1ml
The IU (International Unit) is used to measure fat soluble vitamins A, D and E.
The conversion factor of IU to mg varies depending on the nutrient.
Vitamin
Biological Potency Conversion
A
1mg Beta carotene = 167IU Vitamin A activity
D
1mcg = 40IU / 10mcg = 400IU
E
1mg = 1.2-1.5IU (depending on the carrier)
400IU d-alpha tocopherol = 268mg
APPENDIX 89