What dose am I drawing?
Already mixed your vial? Enter your concentration and how much liquid you're drawing. We'll tell you the exact dose in both mg and mcg.
What's the concentration?
After mixing, your vial has a certain concentration — for example, 2.5 mg/mL means each milliliter of liquid contains 2.5 mg of peptide. Your plan or label should show this.
Not sure?Concentration = vial strength ÷ BAC water added. Example: a 5 mg vial mixed with 2 mL of BAC water = 2.5 mg/mL. Use our BAC Water Calculator to find yours.
How much are you drawing?
Enter the amount of liquid you're pulling into your syringe — in either mL or syringe units.
= 0.250 mg
Drawing 10.0 units from a solution at 2.50 mg/mL gives you 250.0 mcg of peptide per injection.
The math:dose = concentration × volume. 2.50 mg/mL × 0.100 mL = 0.250 mg = 250.0 mcg.
What is concentration?
Concentration tells you how much peptide is dissolved in each milliliter of liquid. It's written as mg/mL(milligrams per milliliter). Think of it like the “strength” of your solution.
Example:If you dissolved a 5 mg vial in 2 mL of BAC water, the concentration is 5 ÷ 2 = 2.5 mg/mL. Every milliliter of that liquid contains 2.5 mg of peptide.
Units vs. mL — what's the difference?
Insulin syringes are marked in “units” instead of mL. The conversion is simple: 100 units = 1 mL. So 10 units = 0.1 mL, and 5 units = 0.05 mL.
If your syringe shows units, just divide by 100 to get mL. Or use our Syringe Unit Converter.
When would I use this calculator?
Use this when you've already mixed your vial and want to double-check what dose you're getting. Common situations:
- You forgot how much BAC water you added and want to recalculate
- You want to verify the dose from a plan someone else gave you
- You're adjusting your dose and want to see the new numbers