BPC-157 Dosage Calculator
This BPC-157 dosage calculator starts in mcg, because BPC-157 is where the microgram trap catches people: the vial is labelled in milligrams and the doses are in micrograms, a thousand times smaller. The conversion is handled before it can hurt anyone. Enter the vial, the water and your dose, and get the draw in units.
Units measure volume, not dose. The same units on a different mix are a different dose.
The link holds only the numbers you typed. No account, no tracking, nothing else.
On this page
BPC-157 dosage calculator table: 250 mcg in every common mix
One dose, five mixes, five different draws. This is the whole BPC-157 maths problem on one table, and it is why a unit number on its own means nothing.
| Vial | Water | Concentration | 250 mcg draw | 500 mcg draw |
|---|---|---|---|---|
| 5 mg | 1 mL | 5 mg/mL | 5 units | 10 units |
| 5 mg | 2 mL | 2.5 mg/mL | 10 units | 20 units |
| 5 mg | 3 mL | 1.67 mg/mL | 15 units | 30 units |
| 10 mg | 2 mL | 5 mg/mL | 5 units | 10 units |
| 10 mg | 3 mL | 3.33 mg/mL | 7.5 units | 15 units |
Read the first two rows together. Same vial, same dose, and the draw doubles from 5 units to 10 just because the second vial got twice the water. Anyone who tells you a dose "is" a number of units without naming the mix is skipping the part that matters.
The 5 unit problem
At the strong mixes, 250 mcg comes out at 5 units. Five units is a sliver of liquid, and it sits among the smallest marks on the barrel, where a half-unit reading error is a tenth of the dose gone wrong. Nothing is unsafe about the mix itself. It is just hard to measure honestly.
The fix is water, not technique. Mix weaker and the same dose becomes a bigger draw that lands on marks you can see. The dose does not change by a single microgram. It is the same trade the reconstitution calculator is built around, and it works backwards: tell it the draw you want, and it tells you the water.
Common questions
How many units is 250 mcg of BPC-157?
It depends on the mix, and the two common ones are easy to remember. In a 5 mg vial with 2 mL of water (2.5 mg per mL), 250 mcg is 10 units. In a 5 mg vial with 1 mL, or a 10 mg vial with 2 mL (both 5 mg per mL), it is 5 units. The full table is above.
How much water do I add to a 5 mg BPC-157 vial?
Your choice, but the water decides how readable your draw is. With 1 mL, a 250 mcg dose is a 5 unit draw, which sits between the small marks on the barrel. With 2 mL it is 10 units, and with 3 mL it is 15 units. Same dose every time. Only the size of the draw changes, so most people pick the mix that makes their dose a number they can actually read.
Why does my vial say mg but my dose is in mcg?
Because the vial holds milligrams and the doses are micrograms. A 5 mg vial holds 5,000 mcg. It is the single most common mix-up with this compound: type 250 into a field expecting mg and the maths is out by a thousand times. This calculator starts in mcg for exactly that reason, and it shows your dose back in both units so you can check it.
How many doses are in a 5 mg vial?
At 250 mcg a dose, 20 doses. At 500 mcg a dose, 10 doses. Vial amount divided by dose, and the water has nothing to do with the count. The calculator shows the count and the doses per vial for your own numbers as you type.
My draw is only 5 units and hard to measure. What can I do?
Mix the next vial with more water. A weaker mix makes the same dose a bigger draw: 250 mcg is 5 units at 5 mg per mL, 10 units at 2.5 mg per mL and 15 units at about 1.7 mg per mL. Nothing about the dose changes. The calculator flags draws under 5 units when they come up, because they are genuinely hard to read on a barrel.
Arithmetic only
This calculator does maths on the numbers you enter. It works out concentration, draw volume and syringe units from the vial amount and water volume you give it. Nothing more.
It does not recommend amounts, schedules or products, and it does not know what is in your vial. It uses the amount printed on the label. If the label and the actual contents differ, the result differs too. For medical questions, talk to a clinician.
How the maths works, and where the facts on this site come from: Methodology and sources.