HCG peptide calculator
A 1 mg HCG vial mixed with 2 ml of bacteriostatic water holds 0.5 mg/ml. A 56 mcg dose is 0.11 ml — 11 units on a U-100 insulin syringe — and the vial holds 17 doses of that size.
HCG dosage chart: units to draw
Units on a U-100 insulin syringe (100 units = 1 ml) for HCG doses from 28 mcg to 167 mcg, by how much bacteriostatic water is in a 1 mg vial. The highlighted row is the 56 mcg dose used above.
| Dose | 1 ml water 1 mg/ml | 2 ml water 0.5 mg/ml | 3 ml water 0.333 mg/ml | Doses per vial |
|---|---|---|---|---|
| 28 mcg | 2.8 u 0.028 ml | 5.6 u 0.056 ml | 8.4 u 0.084 ml | 35 |
| 56 mcg | 5.6 u 0.056 ml | 11 u 0.11 ml | 17 u 0.17 ml | 17 |
| 167 mcg | 17 u 0.17 ml | 33 u 0.33 ml | 50 u 0.50 ml | 5 |
A 11-unit draw fits comfortably on a 0.3 ml insulin syringe (30-unit capacity), whose 1-unit (often half-unit) markings are easier to read than the 2-unit ticks on a 1 ml syringe.
Unit math only, not a dosing recommendation. The dose range is what published protocols and trials describe; see the HCG guide for sources.
How to reconstitute HCG
- Wipe both vial stoppers with a fresh alcohol swab and let them dry.
- Draw 2 ml of bacteriostatic water into a syringe.
- Insert the needle at an angle into the HCG vial and let the water run slowly down the inner wall — do not inject directly onto the powder.
- Do not shake. Gently swirl the vial until the peptide fully dissolves.
- Storage for HCG: Lyophilized refrigerated. Reconstituted: refrigerated 2–8 °C, use within 30 days.
- For a 56 mcg dose, draw to the 11-unit mark (0.11 ml) on a U-100 insulin syringe.
About HCG
Human chorionic gonadotropin (HCG) is a glycoprotein hormone that mimics luteinizing hormone (LH). It is used clinically for fertility and hypogonadism and off-label to maintain testicular function during testosterone replacement therapy.
Half-life: Biphasic: initial ~6 hours, terminal ~36 hours
Typical dose range: 250–1,500 IU per injection (roughly 28–167 mcg), typically 2–3x weekly
Class: Glycoprotein gonadotropin
Regulatory status: FDA approved for hypogonadism, cryptorchidism, and fertility indications. Off-label use for TRT-support is common but not FDA approved.
Read the full HCG guide → — mechanism, side effects, storage, regulatory status and citations. Or browse the whole peptide glossary.
Other tools for HCG
Calculators for related peptides: CJC-1295, Gonadorelin, Hexarelin, HGH (Somatropin), HGH Fragment 176-191.
Need a different unit or a different question? The peptide dose converter moves a dose between mcg, mg and IU, and the HCG half-life chart shows how concentration accumulates across a dosing cadence. Loading HCG into a reusable 3 ml pen instead of drawing it with a syringe? The peptide pen calculator turns the same vial into mcg per click and clicks to dial. All of them are listed on the free peptide tools page.
HCG calculator FAQ
Is this a HCG peptide calculator or a reconstitution calculator?
Both. This HCG calculator converts vial strength, bacteriostatic-water volume, and target dose into milliliters and insulin-syringe units. It does not recommend a medical dose.
How much bacteriostatic water for a 1 mg HCG vial?
This page is pre-filled with 2 ml of bacteriostatic water for a 1 mg HCG vial because that is a common research ratio. You can adjust the water amount in the full calculator.
How many units is a 56 mcg HCG dose?
11 units on a U-100 insulin syringe, when a 1 mg vial is mixed with 2 ml of bacteriostatic water (0.5 mg/ml). That is 0.11 ml. With a different amount of water the unit count changes — the dose chart on this page lists 1 ml, 2 ml, 3 ml mixes.
How many doses are in a 1 mg HCG vial?
17 doses of 56 mcg. The number of doses depends only on vial strength and dose size — adding more or less water changes the volume of each draw, not how many draws the vial holds.
Does this HCG dosage calculator give medical advice?
No. It only performs unit math. Dosing, titration, and whether HCG is appropriate are clinical decisions that should be made with a licensed healthcare professional.
Skip the math — let the app handle it
Peptide Protocol remembers your HCG vial, shows the units for every dose, tracks what is left, and rotates injection sites for you.
Get the iPhone app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.