Dosage

Vitamin E (label: RRR vs. all-rac, mg) unit converter

Mass of vitamin E on labels as mg α-tocopherol: 1 mg RRR-α-tocopherol = 2 mg all-rac-α-tocopherol.

Also known as: alpha-tocopherol equivalents, α-TE, Tocopherol-Äquivalent, Vitamin E label, Vitamin E Etikett

Converter

Enter a value in any unit and all other units fill in.

mg RRR-α-tocopherol mg all-rac-α-tocopherol

Dose conversions apply only to the substance and form named here. Do not use them to dose medicines; follow the label, the package leaflet and your prescriber.

Worked example

10 mg all-rac-α-tocopherol = 5 mg RRR-α-tocopherol

Conversion formulas

mg all-rac-α-tocopherol	mg all-rac-α-tocopherol = mg RRR-α-tocopherol × 2	mg RRR-α-tocopherol = mg all-rac-α-tocopherol × 0.5

Reference range

Doses have no reference range.

Source: 21 CFR 101.9 (FDA nutrition labeling) · Last reviewed: 2026-10-14

Note from the source: 21 CFR 101.9: 1 mg alpha-tocopherol (label claim) = 1 mg RRR = 2 mg all-rac. Different convention from the IU factors (EFSA).

Frequently asked questions

How do I convert Vitamin E (label: RRR vs. all-rac, mg) from mg RRR-α-tocopherol to mg all-rac-α-tocopherol?

mg all-rac-α-tocopherol = mg RRR-α-tocopherol × 2. In the other direction: mg RRR-α-tocopherol = mg all-rac-α-tocopherol × 0.5.

Which units are used for Vitamin E (label: RRR vs. all-rac, mg)?

Common units are mg RRR-α-tocopherol, mg all-rac-α-tocopherol.