PeptideGauge

Free. Independent. Nothing for sale.

Peptides, explained in plain words.

This site helps you understand peptides, do the math when you mix a vial, and see which sellers show their lab paperwork. We explain everything like you are new to this, because most people are.

Mix a vial

Type what is on your vial and how much water you added. We tell you what one draw looks like on the syringe, and show the math.

Open the calculator

Understand the numbers

What mg, mL, and "units" mean, and why a 5 mg vial is not the same as a 5 mL vial. Five minutes, no jargon.

Read how mixing works

Learn a peptide

What it is, what was studied, in whom, and what was found. Every claim links to PubMed. Every study is graded. No amounts, ever.

See the guides

Pick a seller

Ten peptide sellers checked one by one: do they post lab reports, is the lab named, are prices public. Every cell shows the day we checked and links what we found.

See the table

New to peptides? Start here.

Four things to know before you do anything else.

  1. A peptide vial is usually a powder. The label says how much is inside, in milligrams (mg). That number is the whole vial, not one use.
  2. You add water to turn the powder into a liquid. How much water you add decides how strong the liquid is. More water, weaker liquid. Less water, stronger liquid. The label or your doctor tells you how much water; we only do the math on the number you used.
  3. A syringe measures liquid in "units." On the most common syringe, 100 units is 1 mL. Our calculator turns your numbers into a mark on the syringe.
  4. Lab reports are how you judge a seller. A good seller posts a lab report (a "COA") for each batch. Our seller table shows who does, checked cell by cell with dates, and this guide shows how to read one yourself.

What we do

  • Do the mixing math and show every step
  • Explain the words in plain English
  • Read sellers' lab reports and report what is there
  • Fix mistakes in public, with a date

What we do not do

  • Sell peptides or link to a cart
  • Tell you how much to use or how often
  • Tell you how much water to add
  • Take money from any seller

Why you can trust what is here

We show the work. Every calculator answer comes with the math that made it, so you can check it yourself.
We show the date. Anything we say about a seller will carry the day we looked and the page we looked at.
We say what we do not know. If something is not verified, the page says "not verified." It never guesses.

The full rules are on the How we check page. Who runs this is on Who we are.

Ready to mix a vial? The calculator takes three numbers.

Open the calculator