Free peptide tools
A small, growing collection of free web tools for peptide researchers. No sign-up, no ads. Each tool is shareable and bookmarkable.
Reconstitution Calculator
Turn mg + BAC water + dose into exact insulin-syringe units. Shareable, bookmarkable.
Dose Converter
Convert between mcg, mg, and IU. Presets for HGH (3 IU/mg) and HCG (9,000 IU/mg).
HGH IU Converter
Somatropin-specific IU ↔ mg reference: 1 IU ≈ 0.333 mg, 1 mg ≈ 3 IU, with safety notes.
Half-Life Visualizer
Live chart of plasma concentration over time. See steady state, peaks, troughs, and accumulation.
Per-peptide calculator shortcuts
Reconstitution calculator pre-filled with common ratios for specific peptides. Each one also links through to that compound's entry in the peptide glossary.
BPC-157
5 mg vial · 2 ml BAC water · 250 mcg dose
TB-500
10 mg vial · 3 ml BAC water · 2000 mcg dose
Semaglutide
5 mg vial · 2 ml BAC water · 250 mcg dose
Tirzepatide
10 mg vial · 2 ml BAC water · 2500 mcg dose
CJC-1295
2 mg vial · 2 ml BAC water · 100 mcg dose
Ipamorelin
5 mg vial · 2 ml BAC water · 200 mcg dose
GHK-Cu
50 mg vial · 5 ml BAC water · 2000 mcg dose
PT-141
10 mg vial · 2 ml BAC water · 1000 mcg dose
MOTS-c
10 mg vial · 2 ml BAC water · 10000 mcg dose
Tesamorelin
5 mg vial · 2 ml BAC water · 2000 mcg dose
Retatrutide
10 mg vial · 2 ml BAC water · 2000 mcg dose
Hexarelin
2 mg vial · 2 ml BAC water · 100 mcg dose
Selank
5 mg vial · 2 ml BAC water · 300 mcg dose
Semax
5 mg vial · 2 ml BAC water · 300 mcg dose
Epithalon
10 mg vial · 2 ml BAC water · 5000 mcg dose
Thymosin Alpha-1
10 mg vial · 2 ml BAC water · 1600 mcg dose
HGH (Somatropin)
6 mg vial · 2 ml BAC water · 1000 mcg dose
IGF-1 LR3
1 mg vial · 1 ml BAC water · 40 mcg dose
HCG
1 mg vial · 2 ml BAC water · 56 mcg dose
Sermorelin
3 mg vial · 2 ml BAC water · 200 mcg dose
GHRP-2
5 mg vial · 2 ml BAC water · 100 mcg dose
GHRP-6
5 mg vial · 2 ml BAC water · 100 mcg dose
AOD-9604
5 mg vial · 2 ml BAC water · 300 mcg dose
Melanotan II
10 mg vial · 2 ml BAC water · 250 mcg dose
Kisspeptin-10
5 mg vial · 2 ml BAC water · 100 mcg dose
Gonadorelin
1 mg vial · 2 ml BAC water · 100 mcg dose
DSIP
5 mg vial · 2 ml BAC water · 100 mcg dose
SS-31
10 mg vial · 2 ml BAC water · 2000 mcg dose
Liraglutide
3 mg vial · 0.5 ml BAC water · 600 mcg dose
Cagrilintide
5 mg vial · 2 ml BAC water · 450 mcg dose
Survodutide
10 mg vial · 2 ml BAC water · 600 mcg dose
MOD-GRF (1-29)
2 mg vial · 2 ml BAC water · 100 mcg dose
IGF-1 DES
1 mg vial · 1 ml BAC water · 50 mcg dose
Follistatin-344
1 mg vial · 2 ml BAC water · 100 mcg dose
NAD+
500 mg vial · 10 ml BAC water · 100000 mcg dose
KPV
5 mg vial · 2 ml BAC water · 500 mcg dose
LL-37
5 mg vial · 2 ml BAC water · 1000 mcg dose
HGH Fragment 176-191
5 mg vial · 2 ml BAC water · 500 mcg dose
Mechano Growth Factor
2 mg vial · 2 ml BAC water · 100 mcg dose
Glutathione
600 mg vial · 4 ml BAC water · 600000 mcg dose
Put the calculator on your own site
The reconstitution calculator is available as a free, self-contained embeddable widget — one iframe snippet, no tracking, attribution in the footer.
Where to go next
The tools handle arithmetic; the written library handles everything around it. Read how to reconstitute peptides for the mixing sequence, the insulin syringe units guide for what a unit measures, and peptide storage and shelf-life for how long a reconstituted vial lasts. If you are choosing a compound rather than measuring one, start from a goal-based shortlist:
Best peptides for fat loss
GLP-1 and incretin-adjacent compounds, ranked by evidence
Best peptides for recovery
Soft-tissue and connective-tissue repair candidates
Best peptides for sleep
What the sleep-architecture literature actually supports
Best peptides for skin
Topical and injectable dermatology research
Best peptides for cognition
Nootropic peptides and the state of the evidence
Use the app for ongoing tracking
These tools are great for one-off calculations. Peptide Protocol is for every-day tracking — logs, schedules, inventory, insights.
See the app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.