Peptide Calculator
Calculate precise dosages for your peptide therapy. Enter your peptide amount, water volume, and target dose to determine the exact syringe units needed, or switch to Reconstitution to work out how much bacteriostatic water to add.
Peptide Amount in Vial
BAC Water
Syringe
Target Dose
Use the dose on your prescription. Presets are shortcuts, not recommendations.
Unit Rounding
Round the result to a whole or half unit mark you can read on your syringe.
Peptide Amount (Total in Vial)
Desired Concentration
About the Peptide Calculator
How to Use the Peptide Dose Calculator
Our free peptide calculator helps you determine the exact number of units to draw in your insulin syringe for accurate peptide dosing. Simply follow these steps:
- Enter the amount of peptide in your vial (in mg). Turn on Blend if the vial holds more than one peptide
- Specify how much bacteriostatic water you added (in mL)
- Select your syringe type (0.3 mL, 0.5 mL, or 1.0 mL insulin syringe)
- Set your target dose (in mcg or mg)
- The calculator shows exactly how many units to draw, optionally rounded to a whole or half unit mark
Haven't mixed your vial yet? Switch to Reconstitution to find how much bacteriostatic water to add for a target concentration, or for a dose that fits a set number of units.
Supported Peptides
This peptide dosage calculator works for all reconstituted peptides, including:
- Semaglutide (Ozempic, Wegovy)
- Tirzepatide (Mounjaro, Zepbound)
- Liraglutide (Saxenda)
- CJC-1295
- Ipamorelin
- BPC-157
- TB-500
- AOD-9604
- And many other peptides
Why Use a Peptide Calculator?
Accurate peptide dosing is crucial for both safety and effectiveness. Our peptide concentration calculator eliminates guesswork by providing precise calculations based on:
- Peptide concentration: Calculated from your vial amount and water volume
- Syringe specifications: Different syringes have different unit-to-volume ratios
- Target dosage: Your prescribed or desired dose amount
- Unit conversion: Automatic conversion between mcg and mg
Calculator Features
Easy Input Options
- Preset common values, or type any amount
- Blends with two or more peptides in one vial
- Unit conversion (mcg ↔ mg), plus IU for reconstitution
- 0.3 mL, 0.5 mL and 1.0 mL syringes
Detailed Results
- Exact units to draw, with optional whole or half unit rounding
- Amount of each peptide per dose for blends
- Bacteriostatic water to add for reconstitution
- Concentration, injection volume and a step-by-step breakdown
Important Safety Information
This peptide injection calculator is for educational purposes only. Always consult with qualified healthcare professionals before starting any peptide therapy. Verify all calculations and dosages with your healthcare provider. Never adjust dosages without medical supervision.
Frequently Asked Questions
How accurate is this peptide calculator?
Our calculator uses the same mathematical formulas used by healthcare professionals. However, always double-check calculations and consult with your healthcare provider.
Can I use this for any peptide?
Yes, this calculator works for any reconstituted peptide, including Semaglutide, Tirzepatide, and research peptides, as long as you know the peptide amount and water volume.
Can I calculate a dose for a peptide blend?
Yes. Turn on Blend, enter each peptide and its amount in the vial, then choose whether your dose is for one peptide or the whole blend. The calculator shows the units to draw and how much of each peptide that dose contains.
How much bacteriostatic water should I add?
Follow your prescriber or pharmacy's instructions. To check the math, switch to Reconstitution: enter the peptide in the vial and either the concentration you want or the dose and number of units you want to inject, and it shows how many mL of water to add.
What if my result exceeds the syringe capacity?
If the calculated units exceed your syringe capacity, you may need to use a larger syringe, add more water to your vial, or split the dose. Consult your healthcare provider.
Is this calculator free to use?
Yes, our peptide dose calculator is completely free to use. No registration required, and it works offline in your browser.