Unit Converter
Convert between mass units used in peptide research. Enter a value and unit to see the equivalents across ng, mcg, mg, and g. IU conversion reference included below.
Equivalents
Nanograms (ng)
Micrograms (mcg)
Milligrams (mg)
Grams (g)
Enter a value above to convert.
International Units (IU) are compound-specific. Unlike mass units, 1 IU does not represent the same quantity across different substances. The conversions below are based on established pharmacopoeial standards.
| Compound | 1 IU = | Notes |
|---|---|---|
| Human Growth Hormone (HGH) | 0.333 mg (333 mcg) | WHO 2nd IS 98/574 |
| Insulin | 0.0347 mg (34.7 mcg) | U-100 = 100 IU/mL |
| Vitamin D (calciferol) | 0.025 mcg | 40 IU = 1 mcg |
| Vitamin A (retinol) | 0.3 mcg | As all-trans retinol |
| Vitamin E (alpha-tocopherol) | 0.67 mg | Natural form (d-alpha) |
| hCG | ~36 ng | Varies by preparation |
IU definitions may vary between pharmacopoeias and preparations. Always verify against the manufacturer's certificate.
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For research purposes only. Not medical advice.