What this estimate means
PeptiCalc divides total vial amount by the selected dose amount to estimate calculated doses per vial.
Back to calculatorTry these values
Vial count estimate
Free Doses Per Vial Calculator
Estimate how many calculated doses are in a vial after entering vial strength, BAC water, and target dose.
Free doses per vial calculator for BAC water, dose volume, and U-100 syringe mark math.
U-100 marksBAC water mathmL to draw
Math support only
This page is for calculator math and education. It does not diagnose, prescribe, or replace product-label or prescriber instructions.Example calculation
Doses per vial calculator example
This example shows a 10 mg vial and a 500 mcg target dose. The calculator estimates 20 calculated doses before waste or dead space.
- Vial amount
- 10 mg total
- BAC water added
- 2 mL
- Example dose
- 500 mcg
- Concentration
- 5,000 mcg/mL
- Liquid to draw
- 0.1 mL
- U-100 syringe
- 10th mark
In this example, the visual syringe guide would point to the 10th mark. Change the vial, water, or dose values in the calculator to match the exact instructions you are using.
PeptiCalc Pro
$5/moSaved snapshots, protocol notes, printable sheets, reminders, and advanced split tools for repeat calculator workflows.
Checking Pro status
What it does not include
Real-world count can differ because of syringe dead space, priming, spills, product loss, or instructions that require discarding remaining liquid.
Best use
Use it for planning math after you already know the exact vial amount, BAC water amount, and dose instructions.
Frequently asked questions
How many 500 mcg doses are in a 10 mg vial?
Ten mg equals 10,000 mcg. Divided by 500 mcg, that is 20 calculated doses before waste or dead space.
Is this a prescription or protocol?
No. PeptiCalc is a measurement calculator. It helps translate vial strength, BAC water, and a selected dose into syringe marks, but it does not prescribe treatment.
Can I edit the preloaded values?
Yes. Every value that opens in the calculator is editable, including vial amount, BAC water, syringe size, and dose.
Why do syringe marks matter?
Most U-100 insulin syringes show 100 marks per mL. The calculator converts the liquid dose into the mark to pull to on that syringe scale.