Free peptide research tools & resources
VialHelp gives the peptide research community practical, no-cost utilities and plain-language guides — reconstitution math, concentration and volume converters, a printable vial label maker, and reference articles. Everything here is free and built to be genuinely useful on its own.
Calculators & tools
Calculators that handle the lab math for you — concentration, volume, dilution and splitting. Each one is free, runs in your browser, and works on its own.
Reconstitution Calculator
Enter vial mg and BAC water volume to get concentration (mg/mL), draw volume and U-100 units — plus a printable vial label.
Open the calculator →Concentration & Volume Converter
Convert freely between mg, mL and mg/mL — solve for whichever value you are missing.
Open →BAC Water Calculator
Find how much bacteriostatic water to add for a target concentration.
Open →Vial Splitting Calculator
Split a vial into equal portions and see the math for each.
Open →Split-Dose Calculator
Divide one amount across multiple draws and check the totals.
Open →All tools
Every VialHelp calculator in one place.
Browse tools →Guides & how-tos
Plain-language reference on handling and interpreting peptide research materials — written to be useful whether or not you use our calculators.
Peptide reference library
A growing, sourced reference for research peptides — molecular data, reported mechanisms, handling and storage, each page cited and reviewed before publishing.
What is VialHelp?
VialHelp is a free, independent resource for the peptide research community. We build the practical tools researchers actually need — accurate reconstitution and concentration math, a printable label maker, and clearly written reference material — and keep all of it free. No account is required for the calculators.
Is it really free?
Yes. Every calculator and guide is free to use, with no account or sign-up required.
Who is this for?
Researchers and lab users working with reconstituted peptides who need quick, reliable concentration and volume math and reference data.
Do the calculators give dosing advice?
No. The tools output lab relationships — concentration (mg/mL), draw volume and U-100 units — for informational use. They are not medical or dosing advice.
Where does the reference data come from?
Library pages cite published sources and established molecular data, and are reviewed before publishing.
For informational use only — not medical advice · 21+