How many units is 1 mg of semaglutide?
At 2.5 mg/mL, 1 mg of semaglutide is 40 units on a U-100 syringe. At 5 mg/mL, it's 20 units.
Dose calculator
Example values — replace them with your semaglutide label. For total mg + mL, enter all medication and actual liquid in the vial, not the container’s capacity. If your label lists mg/mL, choose concentration.
Your conversion
5 mg ÷ 2 mL = 2.5 mg/mL. 1 mg ÷ 2.5 mg/mL × 100 = 40 units
Educational only. Always follow your prescriber's dose and confirm the numbers with your pharmacist.
1 mg in units, by vial strength
| Vial concentration | Units (U-100) | Volume |
|---|---|---|
| 2.5 mg/mL | 40 units | 0.4 mL |
| 5 mg/mL | 20 units | 0.2 mL |
Where 1 mg fits in the schedule
The third step on the Wegovy schedule (typically weeks 9–12), and a maintenance dose option for Ozempic. Your prescriber sets your actual schedule — follow their instructions.
The formula
units = (dose mg ÷ concentration mg/mL) × 100
Example at 2.5 mg/mL: 1 ÷ 2.5 × 100 = 40 units.
Check the label before converting
These calculations use example concentrations, not a universal semaglutide strength. If a label gives total medication and liquid volume, divide mg by mL first. For example, 5 mg in 2 mL gives 2.5 mg/mL. Use the semaglutide calculator for the numbers on your own label.
Compounded medications are not FDA-approved. The FDA’s semaglutide dosing-error alert explains how differing concentrations and confusion between units, mL, and mg can cause errors.