Converting Between IU and Mg

Converting Between IU and Mg

This chart can help convert dosages cited in studies between international units (IU) and milligrams (mg). For example, 400 IU of synthetic dl-alpha-tocopherol is converted to 363 mg dl-alpha-tocopherol by dividing 400 IU by 1.10.

Synthetic Vitamin E and Esters

IU to mg

mg to IU

d-alpha-Tocopherol acetate

1.00

1.00

d-alpha-Tocopherol succinate

0.89

1.12

d-alpha-Tocopherol

1.10

0.91

Natural Vitamin E and Esters

IU to mg

mg to IU

d-alpha-Tocopherol acetate

1.36

0.74

d-alpha-Tocopherol succinate

1.21

0.83

d-alpha-Tocopherol

1.49

0.67





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