At 20 mg/mL, every 10 units on a U-100 syringe is 2 mg of tirzepatide.
2.5 mg is 12.5 units, and 5 mg is 25 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.
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Tirzepatide 20 mg/mL dose to units chart
| Dose | Volume | Units (U-100) |
|---|---|---|
| 2.5 mg | 0.125 mL | 12.5 units |
| 5 mg | 0.25 mL | 25 units |
| 7.5 mg | 0.375 mL | 37.5 units |
| 10 mg | 0.5 mL | 50 units |
| 12.5 mg | 0.625 mL | 62.5 units |
| 15 mg | 0.75 mL | 75 units |
Tirzepatide 20 mg/mL units to mg chart
| Units (U-100) | Volume | Dose |
|---|---|---|
| 5 units | 0.05 mL | 1 mg |
| 10 units | 0.1 mL | 2 mg |
| 15 units | 0.15 mL | 3 mg |
| 20 units | 0.2 mL | 4 mg |
| 25 units | 0.25 mL | 5 mg |
| 30 units | 0.3 mL | 6 mg |
| 35 units | 0.35 mL | 7 mg |
| 40 units | 0.4 mL | 8 mg |
| 45 units | 0.45 mL | 9 mg |
| 50 units | 0.5 mL | 10 mg |
| 55 units | 0.55 mL | 11 mg |
| 60 units | 0.6 mL | 12 mg |
| 65 units | 0.65 mL | 13 mg |
| 70 units | 0.7 mL | 14 mg |
| 75 units | 0.75 mL | 15 mg |
| 80 units | 0.8 mL | 16 mg |
| 85 units | 0.85 mL | 17 mg |
| 90 units | 0.9 mL | 18 mg |
| 95 units | 0.95 mL | 19 mg |
| 100 units | 1 mL | 20 mg |
How long a 20 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 | 20 mg | 8 | 4 | 2 (+5 mg) | 2 | 1 (+7.5 mg) | 1 (+5 mg) |
| 2 mL | 40 mg | 16 | 8 | 5 (+2.5 mg) | 4 | 3 (+2.5 mg) | 2 (+10 mg) |
| 3 mL | 60 mg | 24 | 12 | 8 | 6 | 4 (+10 mg) | 4 |
| 4 mL | 80 mg | 32 | 16 | 10 (+5 mg) | 8 | 6 (+5 mg) | 5 (+5 mg) |
| 5 mL | 100 mg | 40 | 20 | 13 (+2.5 mg) | 10 | 8 | 6 (+10 mg) |
Real vials can hold slightly more or less than the label says, and a little is lost in the needle.
Notes for 20 mg/mL
- At 20 mg/mL, 1 unit is 0.2 mg and 10 units is 2 mg.
- Listed doses up to 10 mg fit a 0.5 mL (50-unit) syringe.
- Listed doses up to 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 20 mg/mL vial is 10 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 20 mg/mL?
0.125 mL, which is 12.5 units on a U-100 insulin syringe.
How many units is 5 mg of tirzepatide at 20 mg/mL?
0.25 mL, which is 25 units on a U-100 insulin syringe.
How many mg is 10 units of tirzepatide at 20 mg/mL?
10 units is 0.1 mL, which is 2 mg at this strength.
How many 5 mg doses are in a 2 mL vial of 20 mg/mL tirzepatide?
A 2 mL vial at 20 mg/mL holds 40 mg: 8 full doses of 5 mg.
More charts
- Tirzepatide 5 mg/mL chart
- Tirzepatide 10 mg/mL chart
- Tirzepatide 15 mg/mL chart
- Tirzepatide 17 mg/mL chart
- Tirzepatide 25 mg/mL chart
- Tirzepatide 30 mg/mL chart