Semaglutide Units Chart — mg to Syringe Units
A Semaglutide units chart converts milligrams into the marks on a U-100 syringe. At 2 mL of bacteriostatic water a 10 mg vial reads 5 mg per mL, so a 1.7 mg dose is 34 units; the same dose from a 2 mg vial is 85 units. Vial strength, not the dose, moves the number.
Verify every dose with your prescriber or pharmacist.
This page does unit conversion and record-keeping for a dose your prescriber has already set. It does not know your prescription or your product, it does not recommend a dose, and it is not medical advice.
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Result
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Units to draw
34 units
- Concentration
- 5 mg/mL
- Injection volume
- 0.34 mL
Reading the Semaglutide units chart
A Semaglutide units chart only answers a conversion question: given a vial strength and a water volume, where on the syringe does a given dose fall? Semaglutide is sold in 4 common strengths — 2 mg, 3 mg, 5 mg, 10 mg — and each one puts the same dose at a different mark. At 2 mL a 10 mg vial is 5 mg/mL, so ten units carry 0.5 mg.
That difference is entirely a measurement decision. A 1.7 mg dose reads 34 units at 2 mL and 17 units at 1 mL — the same amount of Semaglutide either way. Spreading a dose across more units means a misread mark costs you proportionally less, which is why small doses are usually easier to handle at a lower concentration.
This is why a units figure copied from someone else is close to meaningless on its own. 34 units is a 1.7 mg dose only if their vial was 10 mg and they added 2 mL. Change either number and the same mark delivers something else entirely, which is exactly the mistake the chart above is meant to prevent.
Once the vial is mixed the concentration is fixed until it is finished, so write down what you added. The amounts below are example figures commonly discussed for this compound, used here to make the arithmetic concrete. Your prescriber sets yours. This page does unit conversion and record-keeping for a dose your prescriber has already set. It does not know your prescription or your product, it does not recommend a dose, and it is not medical advice.
Units on a U-100 syringe
The amounts below are example figures commonly discussed for this compound, used here to make the arithmetic concrete. Your prescriber sets yours.
| Example dose | 2 mg vial | 3 mg vial | 5 mg vial | 10 mg vial |
|---|---|---|---|---|
| 0.25 mg | 13 units | 8 units | 5 units | 3 units |
| 0.5 mg | 25 units | 17 units | 10 units | 5 units |
| 1 mg | 50 units | 33 units | 20 units | 10 units |
| 1.7 mg | 85 units | 57 units | 34 units | 17 units |
| 2.4 mg | — | 80 units | 48 units | 24 units |
| Example dose | 2 mg vial | 3 mg vial | 5 mg vial | 10 mg vial |
|---|---|---|---|---|
| 0.25 mg | 25 units | 17 units | 10 units | 5 units |
| 0.5 mg | 50 units | 33 units | 20 units | 10 units |
| 1 mg | 100 units | 67 units | 40 units | 20 units |
| 1.7 mg | 170 units (2 draws of 85) | 114 units (2 draws of 57) | 68 units | 34 units |
| 2.4 mg | — | 160 units (2 draws of 80) | 96 units | 48 units |
| Example dose | 2 mg vial | 3 mg vial | 5 mg vial | 10 mg vial |
|---|---|---|---|---|
| 0.25 mg | 38 units | 25 units | 15 units | 8 units |
| 0.5 mg | 75 units | 50 units | 30 units | 15 units |
| 1 mg | 150 units (2 draws of 75) | 100 units | 60 units | 30 units |
| 1.7 mg | 255 units (3 draws of 85) | 170 units (2 draws of 85) | 102 units (2 draws of 51) | 51 units |
| 2.4 mg | — | 240 units (3 draws of 80) | 144 units (2 draws of 72) | 72 units |
Concentration
| Vial size | 1 mL | 2 mL | 3 mL |
|---|---|---|---|
| 2 mg | 2 mg/mL | 1 mg/mL | 0.67 mg/mL |
| 3 mg | 3 mg/mL | 1.5 mg/mL | 1 mg/mL |
| 5 mg | 5 mg/mL | 2.5 mg/mL | 1.67 mg/mL |
| 10 mg | 10 mg/mL | 5 mg/mL | 3.33 mg/mL |
Step by step
- Read the vial label. Confirm the strength printed on the vial. This page assumes 10 mg; if yours says something else, use the calculator above with your own number.
- Choose the water volume. Adding 2 mL of bacteriostatic water gives 5 mg/mL. More water lowers the concentration and raises the units you draw, which is easier to read; less water does the opposite.
- Add the water slowly. Run the water down the inside wall of the vial rather than onto the powder, then swirl until clear. Do not shake.
- Convert your prescribed dose. Divide the dose by the concentration to get the volume, then multiply by 100 for a U-100 syringe. A 1.7 mg dose here is 0.34 mL, or 34 units.
- Draw to the mark. Pull the plunger to the 34-unit mark, clear any air, and check the reading at eye level before injecting.
- Log what you actually drew. Record the vial strength, the water you added and the units drawn, so the next dose from this vial uses the same concentration.
FAQ
- How many units is 1.7 mg of Semaglutide from a 10 mg vial at 2 mL?
- At 2 mL of bacteriostatic water a 10 mg vial is 5 mg/mL, so 1.7 mg is 0.34 mL — 34 units on a U-100 syringe. For reference, 10 units from this vial is 0.5 mg. Check the figure against your own vial label before you draw.
- What if I add 1 mL instead of 2 mL?
- 1 mL gives 10 mg/mL instead of 5 mg/mL. The vial still contains 10 mg, so nothing about the compound changes — only the volume it is spread through. The same 1.7 mg dose then reads 17 units rather than 34 units.
- Can I measure less than 1 unit on a U-100 syringe?
- Not reliably — one unit is 0.01 mL and most barrels print half-unit marks at best. That limit bites hardest on strong vials: at 2 mL a 2 mg Semaglutide vial puts a 0.25 mg dose at 25 units, while a 10 mg vial puts the same dose at 5 units. Fewer marks means less room for error.
- How many 1.7 mg doses are in a 10 mg vial?
- 5 full 1.7 mg doses, leaving 1.5 mg in the vial. Each of those doses is 34 units at 2 mL, or 17 units at 1 mL — but the count stays 5 either way, because the vial holds 10 mg however much water you add. Water changes the units you draw, never the compound that is there.
- What does each Semaglutide vial size reach at 2 mL?
- 2 mg gives 1 mg/mL, 3 mg gives 1.5 mg/mL, 5 mg gives 2.5 mg/mL, 10 mg gives 5 mg/mL. That is why the same dose reads a different number of units from a different vial — the chart above resolves each combination.
Related
Educational only. Not medical advice. Confirm your vial strength and every dose with your prescriber or pharmacist.