Inputs
Amount per vial mg
Reconstitution solution ml
Dose per injection mg
Results
Draw the syringe to
— units / — ml
Concentration
— mg/ml
Volume to draw
— ml per injection
Injections / vial
—
U-100 insulin syringe: 100 units = 1 ml. Calculations are for research use only and do not constitute clinical advice. See the research disclosure.
How to use
Four steps, one draw.
01.
Enter amount per vial
Pick the total mg of peptide in the vial — printed on the label (e.g. 10 mg Semaglutide, 5 mg BPC-157).
02.
Enter reconstitution solution
Pick the volume of bacteriostatic water you plan to draw into the vial. Common choices are 1 ml, 2 ml, or 3 ml.
03.
Enter dose per injection
Pick the target dose per injection in mg. For sub-mg compounds (e.g. 250 mcg), enter 0.25.
04.
Read the results
The calculator returns the U-100 insulin syringe draw (units), the concentration (mg/ml), the volume per injection (ml), and the total injections per vial.
Peptide calculator — common questions
What is a peptide dose calculator?
A peptide dose calculator converts three inputs — vial strength (mg), reconstitution volume (ml), and target dose per injection (mg) — into the precise draw mark on a U-100 insulin syringe, the concentration of the reconstituted solution, and the number of injections per vial. It removes the mental arithmetic from the reconstitution step.
How does the reconstitution math work?
Concentration (mg/ml) = peptide mg ÷ reconstitution ml. Volume per dose (ml) = dose mg ÷ concentration. On a U-100 insulin syringe, 1 ml = 100 units, so units drawn = volume ml × 100. Injections per vial = peptide mg ÷ dose mg.
What is a U-100 insulin syringe?
A U-100 insulin syringe is calibrated so that 100 units equals 1 ml. The "100" refers to insulin units per ml, but the volumetric scale (each unit = 0.01 ml) is the standard draw reference for subcutaneous peptide injections in research protocols.
Why does the calculator warn about volumes above 1 ml?
A standard U-100 insulin syringe holds 1 ml. If the math asks for more than 100 units in a single injection, the dose cannot fit — either split into two injections, increase the reconstitution volume to lower concentration, or use a larger syringe. The warning surfaces the mismatch before you draw.
Can I use this calculator for any peptide?
The math is identical for every lyophilised peptide supplied as mg per vial — BPC-157, TB-500, Semaglutide, Tirzepatide, Ipamorelin, CJC-1295, and others. The calculator does not recommend a dose; it converts a dose you have already selected from published protocols into a draw volume.
Does this replace clinical advice?
No. The calculator performs unit conversion only. It does not evaluate appropriateness of a compound or dose for any individual, does not address contraindications, and is not a substitute for consultation with a qualified clinician. Doses shown in the preset list reflect ranges appearing in published research — not personal recommendations.
Where can I buy peptides in Thailand after calculating my protocol?
Thailand Peptides is a Bangkok-based research-peptide supplier. Once you have selected a compound from the peptide library, open a chat with the Bangkok research desk via WhatsApp using the Contact button. Response within business hours (GMT+7, Mon–Sat), same-week delivery across Thailand.
Dose planned? Order the compound.
Bangkok research desk, WhatsApp. GMT+7, Mon–Sat.
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