Medical Supervision Required: Peptide Tracker is for private logging, calculations, reminders, inventory records, and education. It is not medical advice, dosing instruction, prescribing guidance, diagnosis, or a substitute for a qualified healthcare professional.

Peptide Dose Calculator

Convert a desired dose into injection volume and U-100 insulin syringe units.

This calculator uses the total amount in the vial, the amount of liquid used for reconstitution, and the desired dose to estimate milliliters and U-100 insulin syringe units. It is a math tool only and does not choose or recommend a dose.

Reconstitution calculator Calculator FAQ Use in the iOS app

1. Calculate Injection Volume

Syringe fill based on calculated U-100 units 0 20 40 60 80 100

Fill is shown on a 100-unit U-100 syringe scale.

Injection volume 0.000mL
U-100 syringe 0.0units
Formula: injection volume = desired dose / total vial amount x reconstitution volume. U-100 insulin units = mL x 100.

2. How This Calculator Works

The calculator first converts the desired dose and total vial amount into micrograms, then calculates the fraction of the vial represented by the dose. That fraction is multiplied by the reconstitution volume to estimate how many milliliters to draw.

For U-100 insulin syringes, 1 mL equals 100 units. A result of 0.05 mL is therefore 5 units, and 0.25 mL is 25 units. If you need to calculate the liquid volume to add to a vial first, use the peptide reconstitution calculator.

3. Example

If a vial contains 5 mg of peptide and was reconstituted with 2 mL, the vial contains 2.5 mg/mL. A 250 mcg dose equals 0.25 mg, which is one tenth of the vial. One tenth of 2 mL is 0.2 mL, or 20 U-100 syringe units.

4. Important Limits

  • IU conversions are peptide-specific and are not included in this web calculator.
  • The result assumes the vial is evenly mixed after reconstitution.
  • This calculator does not determine what dose you should take.
  • Always follow instructions from your clinician, pharmacist, or prescribing documentation.

5. Embed This Calculator

Run a GLP-1, peptide, or medication-safety resource page? You can embed the calculator into your website:

Attribution is built into the iframe. This is a math tool only, not medical advice.

6. Dose Calculator FAQ

  • What does the peptide dose calculator do?

    The peptide dose calculator converts a desired dose into an estimated injection volume. It uses the total amount in the vial, the amount of liquid used for reconstitution, and the desired dose to calculate milliliters and U-100 insulin syringe units. It is a math tool only and does not choose or recommend a dose.

  • How do mg, mcg, mL, and U-100 syringe units relate?

    Milligrams and micrograms measure peptide amount, while milliliters measure liquid volume. One milligram equals 1,000 micrograms. On a U-100 insulin syringe, 1 mL equals 100 units, so 1 unit equals 0.01 mL. The calculator converts the peptide amount to a common unit before calculating volume.

  • What information do I need before using the dose calculator?

    You need the desired dose, the total peptide amount in the vial, and the final reconstitution volume. Those values should come from the vial label, pharmacy directions, prescribing documentation, or a qualified clinician or pharmacist. Do not guess concentration or syringe units from another person's protocol.

  • Can this calculator tell me what dose to take?

    No. This calculator only converts a dose you already have into volume and U-100 syringe units. It does not determine an appropriate dose, diagnose a condition, prescribe treatment, or replace professional medical advice.

  • What should I do if the result is over 100 syringe units?

    A result over 100 U-100 syringe units is more than 1 mL and exceeds the scale of a standard 100-unit insulin syringe. Do not split, dilute, or change the draw based only on the calculator output. Confirm the intended dose, concentration, syringe size, and administration instructions with a qualified professional.

  • Why should I double-check mL and syringe-unit conversions?

    Small conversion errors can become large dosing errors when a vial concentration is different from the example you expected. FDA safety communications have warned that confusion between milligrams, milliliters, and units can contribute to medication errors with compounded injectable products. Treat the result as a calculation to verify, not as dosing instruction.

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