At 15 mg/mL, every 10 units on a U-100 syringe is 1.5 mg of tirzepatide.
2.5 mg is 16.7 units, and 5 mg is 33.3 units. Use the calculator for any other amount.
Dose ↔ units
How long will my vial last?
Uses the vial and dose from the calculator above.
Real vials can hold slightly more or less than the label says, and a little is lost in the needle.
Get the GLP Units app
A phone app for compounded GLP-1 users: vial tracker, injection log and side-effect notes.
Get the GLP Units app: Android first, iPhone later. Join the waitlist and we'll email you at launch.
Tirzepatide 15 mg/mL dose to units chart
| Dose | Volume | Units (U-100) |
|---|---|---|
| 2.5 mg | 0.167 mL | 16.7 units |
| 5 mg | 0.333 mL | 33.3 units |
| 7.5 mg | 0.5 mL | 50 units |
| 10 mg | 0.667 mL | 66.7 units |
| 12.5 mg | 0.833 mL | 83.3 units |
| 15 mg | 1 mL | 100 units |
Tirzepatide 15 mg/mL units to mg chart
| Units (U-100) | Volume | Dose |
|---|---|---|
| 5 units | 0.05 mL | 0.75 mg |
| 10 units | 0.1 mL | 1.5 mg |
| 15 units | 0.15 mL | 2.25 mg |
| 20 units | 0.2 mL | 3 mg |
| 25 units | 0.25 mL | 3.75 mg |
| 30 units | 0.3 mL | 4.5 mg |
| 35 units | 0.35 mL | 5.25 mg |
| 40 units | 0.4 mL | 6 mg |
| 45 units | 0.45 mL | 6.75 mg |
| 50 units | 0.5 mL | 7.5 mg |
| 55 units | 0.55 mL | 8.25 mg |
| 60 units | 0.6 mL | 9 mg |
| 65 units | 0.65 mL | 9.75 mg |
| 70 units | 0.7 mL | 10.5 mg |
| 75 units | 0.75 mL | 11.25 mg |
| 80 units | 0.8 mL | 12 mg |
| 85 units | 0.85 mL | 12.75 mg |
| 90 units | 0.9 mL | 13.5 mg |
| 95 units | 0.95 mL | 14.25 mg |
| 100 units | 1 mL | 15 mg |
How long a 15 mg/mL vial lasts
| Vial | Total | 2.5 mg doses | 5 mg doses | 7.5 mg doses | 10 mg doses | 12.5 mg doses | 15 mg doses |
|---|---|---|---|---|---|---|---|
| 1 mL | 15 mg | 6 | 3 | 2 | 1 (+5 mg) | 1 (+2.5 mg) | 1 |
| 2 mL | 30 mg | 12 | 6 | 4 | 3 | 2 (+5 mg) | 2 |
| 3 mL | 45 mg | 18 | 9 | 6 | 4 (+5 mg) | 3 (+7.5 mg) | 3 |
| 4 mL | 60 mg | 24 | 12 | 8 | 6 | 4 (+10 mg) | 4 |
| 5 mL | 75 mg | 30 | 15 | 10 | 7 (+5 mg) | 6 | 5 |
Real vials can hold slightly more or less than the label says, and a little is lost in the needle.
Notes for 15 mg/mL
- At 15 mg/mL, 1 unit is 0.15 mg and 10 units is 1.5 mg.
- Listed doses up to 7.5 mg fit a 0.5 mL (50-unit) syringe.
- Listed doses up to 2.5 mg fit a 0.3 mL (30-unit) syringe.
Check the strength on every new vial
Units only mean something for one strength. If 50 units was 5 mg on a 10 mg/mL vial, the same 50 units from a 15 mg/mL vial is 7.5 mg, not 5 mg.
In July 2024 the FDA warned about dosing errors with compounded semaglutide, including mix-ups between mg, mL and units (FDA alert). The same math applies to any vial.
Questions
How many units is 2.5 mg of tirzepatide at 15 mg/mL?
0.167 mL, which is 16.7 units on a U-100 insulin syringe.
How many units is 5 mg of tirzepatide at 15 mg/mL?
0.333 mL, which is 33.3 units on a U-100 insulin syringe.
How many mg is 10 units of tirzepatide at 15 mg/mL?
10 units is 0.1 mL, which is 1.5 mg at this strength.
How many 5 mg doses are in a 2 mL vial of 15 mg/mL tirzepatide?
A 2 mL vial at 15 mg/mL holds 30 mg: 6 full doses of 5 mg.
More charts
- Tirzepatide 5 mg/mL chart
- Tirzepatide 10 mg/mL chart
- Tirzepatide 17 mg/mL chart
- Tirzepatide 20 mg/mL chart
- Tirzepatide 25 mg/mL chart
- Tirzepatide 30 mg/mL chart