WeightSnap Tools / Blend calculator

Peptide Blend Calculator

One vial, several peptides. Enter what your label says, how much water you add, and the units you draw. See exactly how much of each peptide is in every injection, shown in mcg the way BPC-157, TB-500, and KPV are usually dosed. Works for Wolverine, GLOW, and KLOW style blends, or anything custom.

Blend recipes vary by vendor. These buttons fill in one common label as a starting point; edit every number to match your vial.

Peptide (from your label)mg in vial
ComponentConcentrationPer injection
0.1 mL
volume per injection
20 injections
per vial at this draw

Why blend math confuses people

With a single-peptide vial, the question is simple: how many units is my dose? With a blend, the vial has a fixed ratio baked in, so every draw contains all of the components at once. You cannot take more of one without taking more of the others. The useful question becomes: for the units I draw, how many mg of each peptide am I actually getting?

Each component's concentration = its label mg ÷ water (mL)
Volume drawn = units ÷ 100 (U-100 syringe)
Each component per injection = volume drawn × its concentration

Worked example: a KLOW-style label reading 50 mg GHK-Cu, 10 mg BPC-157, 10 mg TB-500, and 10 mg KPV, mixed with 2 mL of water. Concentrations are 25, 5, 5, and 5 mg/mL. A 10 unit draw is 0.1 mL, which delivers 2.5 mg GHK-Cu and 500 mcg each of BPC-157, TB-500, and KPV. (BPC-157, TB-500, and KPV are usually dosed in micrograms, so this calculator shows those amounts in mcg once they fall under 1 mg; GHK-Cu, dosed in the milligram range, stays in mg.)

This is also why two people "both taking KLOW" can be taking meaningfully different amounts: different vendor labels, different water volumes, different draws. The label on your vial and the numbers you enter here are what count.

Frequently asked questions

What is a peptide blend?

A single vial containing more than one peptide, freeze-dried together. Common examples: Wolverine-style blends (commonly BPC-157 + TB-500), GLOW-style (commonly GHK-Cu + BPC-157 + TB-500), and KLOW-style (commonly the GLOW trio plus KPV).

How do I dose a blend?

The ratio is fixed by the vial, so a blend is dosed by the draw: pick a number of units and every component scales together. This calculator shows what any draw delivers, per component, with your label and water volume.

Why do Wolverine, GLOW, and KLOW recipes differ between vendors?

They are marketing names, not standardized formulas. Amounts, ratios, and even the component list vary between vendors. That is the reason this tool asks for your label instead of assuming a recipe, and why the preset buttons are labeled as examples.

How many units should I draw?

That is a protocol question for you and your provider. What the tool answers is what a given draw contains, so you can see what 10, 20, or 50 units delivers before anything is decided.

Is this medical advice?

No. This is arithmetic on the numbers you enter. It recommends nothing. Always confirm anything affecting your health with your pharmacist or healthcare provider.

New to KLOW, GLOW, or Wolverine? Our KLOW explainer breaks down what's in the blends and why recipes vary. Tracking a blend by hand means carrying this table in your head. The WeightSnap app handles blends natively: enter the label once and every logged entry records the per-component amounts automatically, alongside vial supply and whether the protocol is working. Single-peptide vial instead? Use the reconstitution calculator. And the research hub has real-world data from 14,252 patient reports.

WeightSnap is a tracking tool, not medical advice. This calculator performs arithmetic on the numbers you enter and makes no recommendations. Always work with your healthcare provider.