For research and educational purposes only. Not medical advice.
Tirzepatide dose calculator
Calculate a tirzepatide weekly dose draw in U-100 syringe units and milliliters from a research-vial concentration.
What this calculator returns
- The U-100 insulin syringe unit count for the chosen weekly tirzepatide dose.
- The equivalent draw volume in milliliters.
- Default presets that mirror the FDA-approved Mounjaro and Zepbound label dose steps (2.5, 5, 7.5, 10, 12.5, 15 mg weekly).
Formula and example
Tirzepatide vial draw math uses the same GLP-1 conversion formula: dose in mg divided by concentration in mg/ml equals ml.
The U-100 unit count is the ml draw multiplied by 100.
Worked example: A 5 mg weekly dose from a 10 mg/ml tirzepatide vial equals 0.5 ml, or 50 U-100 units.
Warnings and boundaries
- Mounjaro and Zepbound pens are FDA-approved branded products with their own instructions.
- Compounded tirzepatide is not FDA-approved.
- The calculator returns math for the concentration entered, not a sourcing or dosing endorsement.