For Research & Education Only
The dedicated calculator for HGH (Human Growth Hormone) dosing. Instantly convert IU to syringe units for precise, reliable dosing.
Calculate Your HGH Dose
Which syringe are you using?
Your HGH Vial
IU
What's the total amount in it?
Based on the standard conversion rate:
1 mg ≈
IU.
How much bacteriostatic water (BAC) are you adding?
This determines your HGH concentration.
1 mL and 2 mL are the most common choices. We've marked 1 mL as a standard starting point.
Your HGH Dose
IU
How much do you want per injection?
Your Injection Dose
To get your 2 IU dose with your selected 0.3 mL syringe:
Pull to 20 units.
Zoomed-in for Accuracy:
Swipe to explore
Answers to Your Questions
What is the standard IU-to-mg conversion for HGH?
The globally accepted standard, based on the World Health Organization (WHO) international standard for high-purity recombinant Human Growth Hormone (rhGH), is 1 mg ≈ 3 IU. Our calculator uses this as the default for all calculations. This "gold standard" is documented in authoritative sources like this official FDA drug label, which shows that 5mg of somatropin is approximately 15 IU.
Why is there an option to edit this "1 mg ≈ 3 IU" rate?
While 1 mg ≈ 3 IU is the universal standard, the most crucial principle is to always trust the manufacturer's data first. Some highly precise pharmaceutical products might provide a slightly different potency on their package insert (e.g., "Potency: 2.8 IU per mg"). Our calculator allows you to edit the conversion rate to match your specific product's documentation, ensuring the highest possible accuracy. If your product information is missing or unclear, using the 3 IU/mg standard is the safest baseline.
What is a common starting dose for HGH research?
Common starting doses for general research purposes often range from 1 to 2 IU per day. However, the optimal dose is highly dependent on the specific research goals, subject weight, and other factors. The information provided here is for informational purposes only and is not a recommendation. Always consult authoritative research literature for your specific application.
How much bacteriostatic water should I add? (Vials vs. Pens)
For standard 10 IU vials, the most common practice is to add 1 mL of bacteriostatic water. This makes the math very simple (10 IU per mL).
Note for Pen/Cartridge Users: If you are using pharmaceutical-grade pre-filled devices (e.g., Genotropin 16 IU / 5.3 mg), be aware that they often come with a fixed diluent volume that is not exactly 1.0 mL. For instance, this official Pfizer label specifies 1.15 mL of solvent. Always check your device's package insert to enter the exact water volume for the highest accuracy.
How should I store my reconstituted HGH solution?
Once reconstituted with bacteriostatic water, HGH solution must always be kept refrigerated (approx. +4 °C). It is highly sensitive to heat and agitation. Do not freeze the reconstituted solution, as this can damage the hormone's delicate structure. Most reconstituted HGH solutions remain stable for approximately 3 to 4 weeks when stored correctly.
Do I need a special syringe for HGH?
No, you will use the same standard U-100 insulin syringes discussed on our main page. This HGH calculator does the essential work of converting the biological potency (IU) into the precise physical volume (units) needed for your U-100 syringe.
What if I need to calculate for HCG or other peptides?
You are currently on our dedicated HGH Dosage Calculator. For other substances, we have specialized tools:
For a universal tool that handles HCG, Insulin, and other IU-based substances, please use our IU Dosage Calculator. For all other standard peptides measured in mg/mcg, our primary Online Peptide Calculator is the right tool.
Is my data safe and private?
Absolutely. Your privacy is our top priority. All calculations are performed directly within your web browser. For your convenience, we may use your browser's local storage to save your inputs, so your data is waiting for you if you revisit.
Crucially, this data is stored only on your own device. We do not see, record, transmit, or have any access to your calculations. Your session is completely private and anonymous.
For a detailed explanation, please review our full Privacy Policy.