Reconstitution math,
solved in seconds.
Enter your vial, water, and target amount — PepGuru returns the exact draw on your syringe. Then explore dosing references, goal-based guides, and COA-verified suppliers, all in one clean place.
Everything you need to research peptides
Skip the scattered forum posts and spreadsheets. PepGuru puts the math, the references, and the sourcing in one place.
Reconstitution Calculator
Vial size, water, target dose — get exact syringe units instantly on a U-100 syringe (100 units = 1 mL). Works with any reconstituted peptide.
Open calculator →Peptide Library
Browse compounds by research goal with typical concentrations, half-life notes, and reconstitution references.
Explore library →Research Guides
Plain-English, source-backed articles on reconstitution, storage, bac water, and handling — no hype.
Read the guides →COA-Verified Sources
Where to buy research peptides that ship with batch Certificates of Analysis and third-party testing.
See suppliers →Browse by research goal
Not sure where to start? Pick a category to see the compounds most studied for it, with reconstitution and concentration references.
Fat Loss & Metabolic
GLP-1 & metabolic research
Recovery & Repair
Tissue & healing research
Skin & Collagen
Dermal & anti-aging research
Growth & Composition
GH-axis research
Cognitive & Nootropic
Neuro research
Research Stacks
Multi-compound references
Start with a COA-verified source
PepGuru highlights suppliers that make verification easy — batch Certificates of Analysis, third-party testing, and clear sourcing.
Summit Research Supply
Third-party HPLC-tested research peptides with a Certificate of Analysis on every batch, plus fast, discreet, U.S.-based fulfillment — a verified supplier featured on PepGuru.
Learn the fundamentals
Source-backed, no-hype references for handling and reconstituting research peptides correctly — plus our vetting standards and what "research use only" actually means.
How to Reconstitute a Peptide
Step-by-step: bac water, mixing technique, storage, and getting a clean, repeatable draw every time.
Read guide →Bacteriostatic Water Explained
What bac water is, why the 0.9% benzyl alcohol matters, how much to use, and where to source it.
Read guide →Reading a Peptide COA
How to interpret a Certificate of Analysis — purity, mass spec, and what actually signals quality.
Read guide →How We Vet Suppliers
Our scoring method, what the calculators actually compute, and a straight affiliate disclosure. No black boxes.
Read guide →Research Use Only & the Law
What RUO labeling means, why peptides are sold as research chemicals, and what a COA does and doesn't prove.
Read guide →Best Peptides for Recovery
The compounds most studied for tissue repair — BPC-157, TB-500, GHK-Cu, KPV and the GLOW/KLOW blends.
Read guide →Common questions
Is the reconstitution calculator free?
Yes — completely free, no signup, no account. Enter your vial strength, bacteriostatic water volume, and target amount to get the exact syringe draw in units.
What peptides does it work with?
Every reconstituted peptide. The math is universal — the calculator only needs your vial strength, water volume, and target amount, so it works the same for any compound.
How do I convert mg to syringe units?
First find concentration: divide the vial amount (in mcg) by the water volume (in mL). Then divide your target dose by that concentration to get the volume, and multiply by 100 for units on a U-100 syringe. PepGuru does all of this for you instantly.
What is PepGuru?
PepGuru is a peptide research hub combining a free reconstitution calculator, a goal-based peptide library, plain-English research guides, and COA-verified supplier references — built alongside Summit Research Supply.
Is this medical advice?
No. PepGuru is an educational research tool. All content is for informational and laboratory-research purposes only and is not medical advice. Products referenced are sold strictly as research chemicals, not for human or veterinary use.
Get the exact draw in seconds
The free PepGuru reconstitution calculator works with any peptide — no signup required.
Open the calculator →