At 2 mg/mL, every 10 units on a U-100 syringe is 0.2 mg of semaglutide.

0.25 mg is 12.5 units, and 0.5 mg is 25 units. Use the calculator for any other amount.

Dose ↔ units

Vial type

I know my…

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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Semaglutide 2 mg/mL dose to units chart

Semaglutide 2 mg/mL: dose to units on a U-100 insulin syringe. Listed doses are for conversion only. Your prescriber sets your dose.
DoseVolumeUnits (U-100)
0.25 mg0.125 mL12.5 units
0.5 mg0.25 mL25 units
1 mg0.5 mL50 units
1.5 mg0.75 mL75 units
1.7 mg0.85 mL85 units
2 mg1 mL100 units
2.4 mg1.2 mL120 units (more than a 1 mL syringe holds)

Semaglutide 2 mg/mL units to mg chart

Semaglutide 2 mg/mL: units to mg
Units (U-100)VolumeDose
5 units0.05 mL0.1 mg
10 units0.1 mL0.2 mg
15 units0.15 mL0.3 mg
20 units0.2 mL0.4 mg
25 units0.25 mL0.5 mg
30 units0.3 mL0.6 mg
35 units0.35 mL0.7 mg
40 units0.4 mL0.8 mg
45 units0.45 mL0.9 mg
50 units0.5 mL1 mg
55 units0.55 mL1.1 mg
60 units0.6 mL1.2 mg
65 units0.65 mL1.3 mg
70 units0.7 mL1.4 mg
75 units0.75 mL1.5 mg
80 units0.8 mL1.6 mg
85 units0.85 mL1.7 mg
90 units0.9 mL1.8 mg
95 units0.95 mL1.9 mg
100 units1 mL2 mg

How long a 2 mg/mL vial lasts

Semaglutide 2 mg/mL: full weekly doses per vial (leftover in brackets). Listed doses are for conversion only. Your prescriber sets your dose.
VialTotal0.25 mg doses0.5 mg doses1 mg doses1.5 mg doses1.7 mg doses2 mg doses2.4 mg doses (over 1 mL each)
1 mL2 mg8421 (+0.5 mg)1 (+0.3 mg)1less than one dose
2 mL4 mg16842 (+1 mg)2 (+0.6 mg)21 (+1.6 mg)
3 mL6 mg2412643 (+0.9 mg)32 (+1.2 mg)
4 mL8 mg321685 (+0.5 mg)4 (+1.2 mg)43 (+0.8 mg)
5 mL10 mg4020106 (+1 mg)5 (+1.5 mg)54 (+0.4 mg)

Real vials can hold slightly more or less than the label says, and a little is lost in the needle.

Notes for 2 mg/mL

Check the strength on every new vial

Units only mean something for one strength. If 20 units was 0.5 mg on a 2.5 mg/mL vial, the same 20 units from a 2 mg/mL vial is 0.4 mg, not 0.5 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 0.25 mg of semaglutide at 2 mg/mL?

0.125 mL, which is 12.5 units on a U-100 insulin syringe.

How many units is 0.5 mg of semaglutide at 2 mg/mL?

0.25 mL, which is 25 units on a U-100 insulin syringe.

How many mg is 10 units of semaglutide at 2 mg/mL?

10 units is 0.1 mL, which is 0.2 mg at this strength.

How many 0.5 mg doses are in a 2 mL vial of 2 mg/mL semaglutide?

A 2 mL vial at 2 mg/mL holds 4 mg: 8 full doses of 0.5 mg.

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