Peptide Unit Converter (mcg / mg / IU)
Peptide research involves multiple measurement units that can be confusing. This converter handles all common conversions between micrograms, milligrams, and International Units used in peptide dosing.
Peptide dosages are expressed in different units depending on the compound, the source, and the research protocol. Micrograms (mcg) are the most common unit for peptides like BPC-157 and Ipamorelin, while milligrams (mg) are used for larger doses such as TB-500 loading phases. International Units (IU) are used for compounds like HGH, HCG, and insulin. This converter lets you move seamlessly between units, reducing calculation errors that could affect your research outcomes. Note that IU conversions are compound-specific because each substance has a unique biological potency per milligram.
How to Use
Select the peptide or compound from the dropdown menu (needed for IU conversions).
Enter the value you want to convert in the input field.
Select the source unit (mcg, mg, or IU).
Select the target unit you want to convert to.
The converter will instantly display the equivalent value in the target unit.
Formula
1 mg = 1000 mcg. IU conversion varies by compound: for HGH, 1 mg = 3 IU; for HCG, 1 mg = approximately 10,000 IU.Example
If a protocol calls for 0.5mg of BPC-157, converting to mcg gives 500mcg (0.5 x 1000). For HGH, converting 2 IU to mg: 2 / 3 = 0.667mg, or 667mcg. Knowing these conversions helps reconcile different protocol formats and vendor labeling conventions.
Frequently Asked Questions
Why do some peptides use IU instead of mcg?
International Units (IU) measure biological activity rather than weight. For compounds like HGH, the biological potency can vary between manufacturers, so IU provides a standardized measure of effectiveness. Synthetic peptides with consistent purity typically use weight-based units like mcg or mg.
Is mcg the same as ug?
Yes, mcg and ug both refer to micrograms. The abbreviation "mcg" is preferred in medical and pharmaceutical contexts to avoid confusion with "mg" (milligrams), which is a thousand times larger. Some scientific literature uses the Greek letter mu (the symbol for micro) followed by g.
How do I convert between mg and mL?
You cannot directly convert mg to mL because they measure different things: mg measures mass and mL measures volume. To convert, you need to know the concentration of your solution (mg/mL). Then, volume in mL = desired dose in mg / concentration in mg per mL.