Online Peptide Calculator LOGOOnline Peptide Calculator

Peptide Blending Calculator

The advanced online tool for calculating complex peptide blends and stacks.

Build your custom peptide blend or stack below. Our calculator will then instantly generate a step-by-step, precise injection protocol for you.

Build Your Blend

Which syringe are you using?
0.3 mL syringe

Peptide #1

Your Peptide Vial

What's the total amount of peptide in it?

How much bacteriostatic water (BAC) are you adding?

This determines the solution's concentration.

Your Desired Dose

How much peptide do you want per injection?

Peptide #2

Your Peptide Vial
How much bacteriostatic water (BAC) are you adding?
Your Desired Dose

Your Injection Protocol

From your Peptide #1 vial, draw to 4 units.
Then, from your Peptide #2 vial, continue drawing until the total reaches 8 units.

Final Confirmation

The total volume in your syringe should now be 8 units.

0.3 mL syringe scale

Zoomed-in for Accuracy:

Full size of 30units syringe scale
Swipe to explore

Answers to Your Questions

Peptide blending, often called "stacking," is the practice of combining two or more different peptides into a single injection. Our peptide blending calculator is specifically designed to simplify this advanced process, ensuring you can accurately draw multiple solutions into one syringe.
While our calculator for blends handles the math for any order, a common best practice is to draw the clearest, most colorless solutions first. Always check for specific guidelines related to the peptides you are researching, as some may have unique properties. Crucially, this tool is for calculating volumes only. It cannot and does not provide advice on the chemical compatibility or potential interactions between different peptides. Always conduct thorough independent research.
Our tool allows you to add multiple peptide units to build your blend. While there's no hard limit, always consider the total final volume to ensure it fits within your selected syringe and is a comfortable volume for a single injection. Most users blend two to three peptides at a time.
The mathematical accuracy of our peptide calculator for blends is extremely high. The final precision of your blend, however, is in your hands—it depends on your accuracy in reconstituting each vial and carefully drawing each solution in sequence. Follow the protocol closely for the best results.
No, you will use the same standard U-100 insulin syringes. We typically recommend a 1.0 mL syringe for blending due to its larger capacity, ensuring enough room for multiple solutions.
You are currently on our Peptide Blending Calculator. For standard, single-peptide dosing, please use our primary Online Peptide Calculator. For products measured in IU (like HGH), our dedicated IU Dosage Calculator is the perfect tool.
Absolutely. Your privacy is our top priority. All calculations are performed directly within your web browser. For your convenience, we may use your browser's local storage to save your inputs, so your data is waiting for you if you revisit.

Crucially, this data is stored only on your own device. We do not see, record, transmit, or have any access to your calculations. Your session is completely private and anonymous.

For a detailed explanation, please review our full Privacy Policy.