IU Dosage Calculator

The specialized online tool for HGH, HCG, and other IU-based peptide dosing.

Calculate Your IU Dose

Your Peptide Vial

What's the total amount of peptide in it?

Your Desired Dose

How much peptide do you want per injection?

mcg

Conversion Rate

To convert between units, tell us:

1 mg =

How much bacteriostatic water are you adding?

This determines the solution's concentration.

Which syringe are you using?

Your Injection Dose

To get your 333 mcg dose with your selected 0.3 mL syringe:

Pull to 10 units.

Zoomed-in for Accuracy:

Swipe to explore

Answers to Your Questions

What is IU (International Unit) and why is it used?

An IU, or International Unit, is a measure of a substance's biological effect (potency), not its mass. For certain substances like HGH or HCG, potency can vary. The IU standard, often established by expert committees at the World Health Organization (WHO), ensures a consistent measure of effect worldwide. Our IU peptide calculator is specifically designed to handle these units.

Where do the preset conversion rates (e.g., for HGH) come from?

The conversion rates in our presets are based on the international standards for biological substances established by the World Health Organization (WHO). These standards are maintained and distributed by institutions such as the National Institute for Biological Standards and Control (NIBSC, UK), which serves as the WHO International Laboratory for Biological Standards. While our presets reflect these international references, we strongly recommend verifying against the official documentation of your specific product.

Why does the "Conversion Rate" section disappear when I use IU for everything?

This happens for a good reason. When both your vial total and your desired dose are in IU, a direct mass conversion (to mg) is not needed for the calculation. Our IU calculator can then perform a direct, highly accurate calculation within the IU unit system itself. The conversion rate tool only appears when you need to bridge the gap between IU and mg/mcg.

Can I trust the accuracy of this IU peptide calculator?

Yes. you can be confident in our calculator's math. It uses precise mathematical formulas for all conversions and calculations. The final accuracy of your dose, however, is critically dependent on using the correct IU-to-mg conversion rate for your specific product. Always use the information from your supplier if it differs from our presets.

Do I need a specific type of syringe for IU-based products?

No, you will still use the same standard U-100 insulin syringes. The "units" on these syringes are a measure of volume (0.01 mL per unit). Our peptide calculator with IU support does the complex job of converting the biological potency (IU) into the correct physical volume (units) for your syringe.

What if I only need a standard mg/mcg or a blending calculation?

You are currently on our specialized IU Dosage Calculator. For basic mg/mcg dosing, please use our primary Online Peptide Calculator. For combining multiple peptides into a single injection, our dedicated Peptide Blending Calculator is the perfect tool for that task.

Is the data I enter into the IU calculator kept private?

Absolutely. All inputs, including the substance type, amounts, and conversion rates, are processed only in your browser. We do not see, record, or store any of your data. Your session is 100% private and anonymous.