Peptide Calculators
Reconstitution and dosing calculators for the most-searched research compounds, grouped by category. Each page shows the typical vial sizes and a worked example, then links into the live calculator. The math is the same everywhere — vial amount divided by the water you add.
Note: compound names identify what you're measuring only. Many are sold for laboratory research and are not approved for human use; nothing here recommends a dose.
Core calculators & guides
Bacteriostatic Water Calculator
How much water to add, and the concentration you'll get.
Peptide Dosage & Units Calculator
Turn a dose into the exact insulin-syringe units.
Peptide Half-Life Calculator
How much is left over time and time to steady state.
Intranasal Spray Calculator
Mcg per pump from water, saline and pump volume.
Required Supplies Calculator
Vials, syringes, swabs and water for a full cycle.
Guides & resources
How to Read an Insulin Syringe
Units vs mL, U-100 markings, and the common sizes.
Bacteriostatic vs Sterile Water vs Saline
What each diluent is and which to reconstitute with.
What Is Peptide Reconstitution?
Turning freeze-dried powder into a measured solution.
mcg vs mg vs Units (IU)
What each measurement means and how they relate.
Storing Reconstituted Peptides
Refrigeration, light, and why the diluent matters.
Free Calculator Widget
Embed the reconstitution calculator on your own site.
Metabolic & GLP-1
Retatrutide
an investigational GLP-1 / GIP / glucagon triple-receptor agonist studied in cli…
Semaglutide
a GLP-1 receptor agonist…
Tirzepatide
a GLP-1 / GIP dual receptor agonist…
Cagrilintide
an investigational long-acting amylin analog studied in clinical trials…
AOD-9604
a modified fragment of human growth hormone (the hGH 176-191 sequence)…
SLU-PP-332
a synthetic small-molecule ERR (estrogen-related receptor) agonist — an “exercis…
5-Amino-1MQ
a small-molecule NNMT inhibitor (not a peptide)…
Healing & recovery
BPC-157
a synthetic peptide based on a partial sequence related to a gastric protein…
TB-500
a synthetic peptide corresponding to a fragment of thymosin beta-4…
GHK-Cu
a copper-binding tripeptide complex…
Peptide blends
GLOW Blend
a research blend of three peptides — GHK-Cu (50 mg), BPC-157 (10 mg) and TB-500 …
KLOW Blend
a research blend of four peptides — GHK-Cu (50 mg), BPC-157 (10 mg), TB-500 (10 …
Growth-hormone secretagogues
Ipamorelin
a selective growth-hormone secretagogue (a pentapeptide)…
CJC-1295
a growth-hormone-releasing hormone (GHRH) analog, sold with or without DAC…
Sermorelin
a growth-hormone-releasing hormone (GHRH) analog (the GHRH 1-29 fragment)…
Tesamorelin
a growth-hormone-releasing hormone (GHRH) analog…
Longevity & mitochondrial
MOTS-c
a mitochondrial-derived peptide…
Epithalon
a synthetic tetrapeptide (also spelled epitalon; one of the Khavinson bioregulat…
Nootropic & intranasal
Semax
a synthetic peptide developed in Russia, commonly used intranasally…
Selank
a synthetic peptide developed in Russia, commonly used intranasally…
Melanocortin
PT-141
a melanocortin receptor agonist (bremelanotide)…
Melanotan 2
a synthetic melanocortin analog (MT-2)…
Frequently asked questions
Which peptide calculator should I use?
Use the reconstitution calculator for any injectable lyophilized peptide to get concentration and syringe units. Use the intranasal spray calculator for nasal preparations like Semax or Selank. Use the half-life calculator to see how an amount decays over time.
Does the math change for different peptides?
No. Reconstitution is always vial amount divided by the water you add. The per-compound pages exist to show the typical vial sizes and a worked example for each, but the underlying arithmetic is identical.
Are blends like GLOW and KLOW calculated differently?
You enter the total milligrams in the vial (70 mg for GLOW, 80 mg for KLOW). Because the blend is a fixed ratio, each draw contains every component in the same proportion.