International units to micrograms
Type a value in IU to get it in µg instantly.
That's 1.67× as much as a daily requirement, while a typical supplement is 2× more. Information only: check the form stated on your own label.
Convert the other way: µg to IU
What it means
How much is that?
Information only, not medical advice. Labels increasingly give micrograms instead of IU, and for vitamin E the natural and synthetic forms differ.
The math
How to convert IU to µg
An IU is a unit of activity, so each vitamin has its own weight: µg = IU × µg per IU. The figures below use the vitamin selected above.
Example: 1,000 IU = 25 µg.
The table below is for Vitamin D (1 IU = 0.025 µg).
Every unit
Your dose in every unit
Tables
IU to µg conversion table
| IU | µg |
|---|---|
| 100 IU | 2.5 µg |
| 200 IU | 5 µg |
| 400 IU | 10 µg |
| 500 IU | 12.5 µg |
| 800 IU | 20 µg |
| 1,000 IU | 25 µg |
| 2,000 IU | 50 µg |
| 4,000 IU | 100 µg |
| 5,000 IU | 125 µg |
| 10,000 IU | 250 µg |
µg to IU conversion table
| µg | IU |
|---|---|
| 100 µg | 4,000 IU |
| 200 µg | 8,000 IU |
| 400 µg | 16,000 IU |
| 500 µg | 20,000 IU |
| 800 µg | 32,000 IU |
| 1,000 µg | 40,000 IU |
| 2,000 µg | 80,000 IU |
| 4,000 µg | 160,000 IU |
| 5,000 µg | 200,000 IU |
| 10,000 µg | 400,000 IU |
Quick answers
Quick answers
- How many µg is 1 IU?
- 1 IU is 0.025 µg.
- How many µg is 10 IU?
- 10 IU is 0.25 µg.
- How many µg is 1,000 IU?
- 1,000 IU is 25 µg.
The units
About these units
International units (IU)
A measure of biological activity. Its weight depends on the vitamin.
Micrograms (µg)
What modern labels give, often written mcg.
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