BPC-157 Dose Calculator
Dosing BPC-157 in micrograms? Enter your vial size, the bacteriostatic water you added, and your dose in mcg — this free BPC-157 dose calculator converts it into the exact units to draw on an insulin syringe, plus your concentration and how many doses the vial holds.
100 units per mL — pick the syringe you have.
Draw to
BAC water
on a U-100 insulin syringe
Drag the syringe to set your dose, or type the values above.
Enter your vial amount and dose, then type the bacteriostatic water or drag the syringe to see the exact units to draw.
Chips and prefilled values are commonly used numbers shown for convenience — not recommendations. Enter your own vial, dose, and water.
Never do this math twice.
The Pep AI app remembers your vials and doses, shows an interactive syringe you draw to, counts down the doses left in each vial, and reminds you when it's time. Free on iOS and Android.
How the BPC-157 math works
BPC-157 vials are labeled in milligrams but doses are usually spoken of in micrograms — the calculator handles the unit conversion and the three steps from vial to syringe:
1. Concentration
Vial amount ÷ water added. A 10 mg vial with 2 mL of water is 5 mg/mL.
2. Volume per dose
Your dose ÷ concentration. A 0.25 mg dose at 5 mg/mL is 0.05 mL.
3. Units to draw
Volume per dose × 100 for a U-100 syringe (or × 40 for a U-40). 0.05 mL on a U-100 syringe is 5 units.
Worked example
You have a 10 mg vial, you want a 250 mcg dose, and you add 2 mL of bacteriostatic water. Concentration is 10 ÷ 2 = 5 mg/mL. Volume per dose is 0.25 ÷ 5 = 0.05 mL. On a U-100 syringe that's 0.05 × 100 = 5 units, and the vial holds 40 doses.
The mcg trap, and why water choice matters more here
The single most common BPC-157 mistake is a unit mix-up: doses are usually quoted in micrograms (250 or 500 mcg are typical figures in common use), while vials are labeled in milligrams. 250 mcg is 0.25 mg — a thousandfold difference from 250 mg. The calculator's mg/mcg toggle exists exactly so that conversion never happens in your head.
Because BPC-157 doses are small, the amount of bacteriostatic water you add decides how readable your draw is. A 250 mcg dose from a 5 mg vial with 1 mL of water is just 5 units on a U-100 syringe — easy to overshoot. The same dose with 3 mL of water is 15 units, a much easier line to hit. More water means larger, more forgiving draws; the trade-off is a bigger liquid volume in the vial.
BPC-157 rarely runs alone — it's usually part of a stack. The Pep AI app tracks it alongside whatever else you run, converts every dose from your saved vial, rotates injection sites, and follows your cycle — the BPC-157 tracker has the details.
Frequently asked questions
This calculator is provided for informational and educational purposes only and is not medical advice. Always confirm dosing with a qualified healthcare professional and double-check your own measurements before administering anything.