What this calculator does
It helps convert known dose instructions into measurement math. It does not decide what dose is appropriate for a person.
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Dose to syringe mark math
Free Peptide Dosage Calculator
Translate known peptide instructions into concentration, dose volume, and U-100 syringe marks. Calculator math only.
Free peptide dosage 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
Peptide dosage calculator example
This example translates a known dose into calculator math. It does not choose the dose; it only shows how a known dose becomes liquid volume and a syringe mark.
- Vial amount
- 5 mg total
- BAC water added
- 2 mL
- Example dose
- 250 mcg
- Concentration
- 2,500 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.
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What you enter
Enter syringe size, total mg in the vial, BAC water amount, and the dose amount from your instructions.
What you get
PeptiCalc shows dose volume, concentration, dose amount, mcg per mark, and a visual syringe guide.
Frequently asked questions
Can this build a personalized peptide dosage plan?
No. It can format and calculate measurement math from existing instructions. Personalized dosing should come from a licensed source.
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.