Mix it. Measure it. Get the number that matters.
Enter your vial strength and the water you're adding — get concentration, the exact draw on an insulin syringe, and how many doses are in the vial. No guesswork.
How the math works
Concentration = peptide ÷ water. A 10 mg vial in 2 mL of water gives 5 mg/mL (5,000 mcg/mL).
Draw volume = dose ÷ concentration. A 250 mcg dose ÷ 5,000 mcg/mL = 0.05 mL.
Insulin units = volume × 100, because a U-100 syringe marks 100 units per millilitre. So 0.05 mL = 5 units. The live numbers above always reflect whatever you enter.
Using a pen? One click on a refillable peptide pen is normally 0.01 mL — exactly one unit on a U-100 syringe. The units figure above is therefore also the number of clicks to dial, so no separate pen conversion is needed.
Working backwards (Target draw → water): if you'd rather each dose land on a tidy number of units, that fixes the volume you draw — so water = peptide × draw volume ÷ dose. A 10 mg vial dosed at 250 mcg with a 10-unit (0.1 mL) draw needs 10,000 mcg × 0.1 mL ÷ 250 mcg = 4 mL of bacteriostatic water.
Less water → higher concentration → fewer units per dose. More water makes small doses easier to measure accurately.
A blend is mixed at a fixed ratio, so every draw contains all components in the same proportion. Enter each peptide and the water you're adding to see what a single draw actually delivers. Prefilled with a GLOW-style 50/10/10 blend — change any row for your own.
How the math works
A blend arrives pre-mixed at a fixed ratio, so you can't separate the components — but you don't need to. Each one behaves like its own vial that happens to share the same water.
Total concentration = all components added together ÷ water. A 50 + 10 + 10 mg blend in 3 mL is 70 mg ÷ 3 mL = 23.333 mg/mL.
Each component = that component's mg ÷ the same water. GHK-Cu is 50 mg ÷ 3 mL = 16.667 mg/mL, while BPC-157 is 10 mg ÷ 3 mL = 3.333 mg/mL.
Per draw = each component's concentration × the volume you draw. At 10 units (0.1 mL) that's 1,666.7 mcg of GHK-Cu and 333.3 mcg each of BPC-157 and TB-500.
The shortcut: a draw that is one-tenth of the vial contains one-tenth of every component. Changing the water changes all components together — the ratio between them never moves.
Some compounds — HGH and hCG among them — are labelled in international units rather than milligrams. An IU is not a fixed mass: it depends on the potency of that specific substance, which is printed on the product label or certificate of analysis. Enter that potency and this converts both ways.
How the math works
An IU is a unit of biological activity, not of mass. The same 1 mg can be a different number of IU for different substances, so every conversion needs that substance's potency figure — its IU per mg. This page never assumes one; it uses whatever you enter.
Total IU = vial in mg × potency. A 10 mg vial at 3 IU/mg holds 30 IU.
Concentration = total IU ÷ water. 30 IU ÷ 2 mL = 15 IU/mL.
Volume per dose = dose ÷ concentration, and units = volume × 100 on a U-100 syringe. A 2 IU dose is 2 ÷ 15 = 0.133 mL, which is 13.3 units.
Switching the dose unit to mg runs the same conversion in reverse — it turns your milligrams into IU using the potency, then measures that.
Potency figures vary by product and manufacturer. Read yours off the label or COA rather than assuming a typical value.
How the math works
Total volume = bacteriostatic water + saline. Both liquids count toward how dilute the spray is — the water typically dissolves and preserves the peptide, the saline brings it closer to an isotonic, nose-friendly mix.
Concentration = peptide ÷ total volume. A 10 mg vial in 2 mL total = 5,000 mcg/mL.
Per pump = concentration × pump volume. A metered nasal pump usually delivers about 0.1 mL, so 5,000 mcg/mL × 0.1 mL = 500 mcg per pump.
Pumps per bottle = total volume ÷ pump volume. Real bottles lose a little to priming and the dip-tube dead space, so expect a few fewer usable pumps than the theoretical count.
How the math works
Reconstitute, then add to base is the usual route. First the vial is dissolved: solution concentration = peptide ÷ bacteriostatic water. A 10 mg vial in 1 mL is 10 mg/mL.
Peptide added = solution concentration × the volume you add. Adding 1 mL of that 10 mg/mL solution moves 10 mg into the base.
Finished amount = base + the solution you added, because that liquid is now part of the mix. 30 g of base + 1 mL ≈ 31 g.
Concentration = peptide added ÷ finished amount. 10 mg ÷ 31 g = 0.323 mg/g, or 0.032% w/w. As a check, 1% w/w = 10 mg/g, so percent is always mg/g ÷ ten.
Dry powder into base skips the liquid: the whole vial goes into the base and the concentration is peptide ÷ base. Per application = mg-per-gram × the amount you apply.
This is arithmetic on the amounts you enter — it does not recommend a strength, a base, or how to apply anything.
How the math works
Each half-life cuts the amount in half. After n half-lives, (½)ⁿ of the dose remains — so 1 half-life leaves 50%, two leaves 25%, three leaves 12.5%, and so on.
Single dose shows that decay curve and the exact amount left at the time you enter.
Repeated dosing stacks each new dose on top of what hasn't cleared yet. Levels keep climbing until clearance balances intake — that plateau is steady state, reached after about 5 half-lives. The accumulation factor tells you how much higher the steady-state peak sits versus a single dose.
How the math works
Doses per vial comes from the reconstitution math: total peptide ÷ dose. The rest follows from how often and how long you inject.
Total injections = frequency × protocol length. Vials needed = total injections ÷ doses per vial, rounded up. Syringes = one per injection; swabs = your per-injection count (2 is common — one for the vial, one for the site).
Bacteriostatic water = vials needed × the volume you add to each. These are theoretical minimums, so always keep spares on hand.