Research peptide
Tirzepatide
10mg
$189
Research-use catalog item supplied for identification and laboratory cataloging only. No medical, dosing, or administration guidance is provided.
Peptides Pro · Dose Lab · free · no sign-up · guided by data
Peptide Calculator — reconstitution, dose & syringe units, done right
Know exactly how much water to add and how much to draw — before you touch a vial. Pick your peptide, set your numbers, and the syringe fills in front of you. Every result lives in the link, so you can save it or send it in one tap.
Sanity check
5 mg + 2 mL + 250 mcg = 10 units
If your inputs match this, your math is right.
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Review the global Peptides Pro peptide catalog after you calculate reconstitution, syringe units, and vial math.
Research peptide
Retatrutide
10mg
$199
Research-use catalog item supplied for identification and laboratory cataloging only. No medical, dosing, or administration guidance is provided.
Research peptide
Semaglutide
30mg
$229
Research-use catalog item supplied for identification and laboratory cataloging only. No medical, dosing, or administration guidance is provided.
Research peptide
BPC-157
10mg
$79
Research-use catalog item supplied for identification and laboratory cataloging only. No medical, dosing, or administration guidance is provided.
Research peptide
TB-500
10mg
$149
Research-use catalog item supplied for identification and laboratory cataloging only. No medical, dosing, or administration guidance is provided.
Research peptide blend
BPC + TB Blend
10mg + 10mg
$229
Research-use catalog item supplied for identification and laboratory cataloging only. No medical, dosing, or administration guidance is provided.
How to reconstitute a peptide
Reconstitution is just three numbers: how much peptide is in the vial, how much BAC water you add, and how much you want per shot. From there the calculator does the rest — it turns the vial into a strength (mg/mL), then turns your target into a draw volume and the exact units on an insulin syringe. No guessing, no napkin math.
Worked example: a 5 mg vial with 2 mL of BAC water is 2.5 mg/mL. A 250 mcg target is 0.25 mg — that's 0.1 mL, or 10 units on a U-100 barrel.
How this calculator works
Everything runs in milligrams and millilitres under the hood, then shows you the unit you picked. Units always use the standard U-100 scale where 1 mL = 100 units — U-30, U-50 and U-100 only change how big the barrel is, not the math. Single vial is one peptide. Blend / stack shares one water volume across several peptides and shows what each one delivers in the same draw. Nasal spray works out mcg per spray and sprays per vial from your spray volume.
FAQ
Peptide calculator questions
What is BAC water?
Bacteriostatic water — sterile water with a tiny amount of benzyl alcohol so a mixed vial stays stable. It's the standard liquid used to reconstitute a lyophilised (freeze-dried) peptide. This tool only does the math.
How much BAC water should I add?
Enough to make your dose easy to measure. There's no single "right" amount — more water means a bigger, easier-to-read draw; less water means a smaller one. Use the round-number mixes above to land your dose on a clean unit like 10, 20 or 25.
How do I read an insulin syringe?
On a U-100 syringe, 1 mL = 100 units, so 0.1 mL is 10 units. That ratio holds whether the barrel is 0.3 mL, 0.5 mL or 1 mL — the smaller barrels are just easier to read for tiny draws.
U-30 vs U-50 vs U-100 — what's the difference?
Only the barrel size. U-30 holds 30 units, U-50 holds 50, U-100 holds 100. The unit scale is identical on all three — pick the smallest one your draw fits in for the cleanest read.
This is a math tool for laboratory and research reference only. It calculates reconstitution and does not tell you what to take or how much — that's not something we or any calculator can decide for you. Always check the numbers against your own protocol. Peptides Pro does not diagnose, treat, cure or prevent any disease.