Peptide Calculator Online + Mobile App

Estimate peptide concentration, dose volume, syringe marking, and vial doses. Enter your details, then copy or save results and verify them professionally before use. (How the Peptide Calculator Works / Medical disclaimer).

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Use this peptide calculator to estimate mixture concentration, liquid volume per dose, syringe marking, and the number of complete doses available from a vial. Enter the peptide amount, diluent volume, desired dose, dose unit, syringe calibration, and syringe capacity. Results update automatically and can be copied or saved for later reference. Always verify every value, syringe label, and calculated result with a qualified healthcare professional before making any health-related decision.

Concentration, dose volume & syringe markings
Peptide amount per vial (mg)
Diluent volume (mL)
Desired dose
Dose unit
Syringe calibration
Syringe capacity
Precision
Waiting…
MetricValue
Saved Dilutions
Medical Disclaimer: This peptide calculator and the information on this page are provided for general informational and educational purposes only. They are not intended to provide medical advice, diagnosis, treatment recommendations, prescribing instructions, or guidance on whether any peptide or other substance is appropriate for you.

Calculator results depend entirely on the values entered and may be affected by incorrect vial amounts, diluent volumes, dose units, syringe calibration, syringe capacity, product labeling, or measurement technique. Always verify the product label, prescribed dose, concentration, syringe type, and calculated result with a qualified healthcare professional or pharmacist before preparing, measuring, mixing, or using any substance.

Do not start, stop, combine, or change any treatment based solely on this calculator. Appsoup.com and the calculator’s creators do not guarantee the accuracy, completeness, suitability, or safety of the results and are not responsible for errors, misuse, or decisions made based on the information provided. Use of this calculator is at your own risk.

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How the Peptide Calculator Works

The calculator uses the peptide amount in the vial, the amount of diluent added, and the desired dose to determine the concentration, liquid volume per dose, syringe marking, and number of complete doses available.

1. Calculate the concentration

Concentration (mg/mL) = Peptide amount (mg) ÷ Diluent volume (mL)

Example: A 10 mg vial mixed with 2 mL of diluent has a concentration of 5 mg/mL.

2. Convert the desired dose to milligrams

If the dose is entered in micrograms, the calculator converts it to milligrams:

Dose in mg = Dose in mcg ÷ 1,000

Example: 250 mcg equals 0.25 mg.

3. Calculate the liquid volume per dose

Volume per dose (mL) = Desired dose (mg) ÷ Concentration (mg/mL)

Using the example above: 0.25 mg ÷ 5 mg/mL = 0.05 mL per dose.

4. Calculate the syringe marking

Syringe units = Volume per dose (mL) × Syringe calibration

For a U-100 syringe: 0.05 mL × 100 = the 5-unit mark.

For a U-40 syringe: 0.05 mL × 40 = the 2-unit mark.

5. Calculate doses per vial

Doses per vial = Total peptide amount (mg) ÷ Desired dose (mg)

Example: 10 mg ÷ 0.25 mg = 40 complete doses.

Important: Syringe calibration and syringe capacity are different. Calibration determines how many syringe units equal 1 mL, while capacity is the maximum amount the syringe can hold. Always verify the syringe label, entered values, and calculated result with a qualified healthcare professional or pharmacist before use.