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Reference chart / dose math

Semaglutide Units Chart: mg to Units at Common Strengths

It depends on your vial strength. This semaglutide chart converts the label dose values in the calculator into mL and U-100 syringe units at common example strengths. The vial label decides which column applies.

Last updated Medical review in progress

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Full reference table

mg to units and mL

Each cell shows exact units and mL for a U-100 syringe at that vial strength. A dash means the amount is more than a 1 mL syringe holds.
Dose1 mg/mL2 mg/mL2.5 mg/mL5 mg/mL10 mg/mL
0.25 mg25 units0.25 mL12.5 units0.125 mL10 units0.10 mL5 units0.050 mL2.5 units0.025 mL
0.5 mg50 units0.50 mL25 units0.25 mL20 units0.20 mL10 units0.10 mL5 units0.050 mL
1 mg100 units1.00 mL50 units0.50 mL40 units0.40 mL20 units0.20 mL10 units0.10 mL
1.7 mg——85 units0.85 mL68 units0.68 mL34 units0.34 mL17 units0.17 mL
2 mg——100 units1.00 mL80 units0.80 mL40 units0.40 mL20 units0.20 mL
2.4 mg————96 units0.96 mL48 units0.48 mL24 units0.24 mL

A dash (—) means the amount is more than a 1 mL syringe holds at this strength. This table is math only, not dose instructions.

Read the strength first

Units measure liquid, not the amount of medicine. Divide the dose in mg by the vial strength in mg per mL to get mL. Multiply mL by 100 to get units on a U-100 syringe. The same mg amount can be a different number of units when the vial strength changes.

This page is a math reference. It does not choose a dose. Check the exact vial label, the U-100 marking, and the printed lines on the syringe you have. If the label or the lines do not match the result, stop and ask your prescriber or pharmacist.

Syringe lines reference

Every fifth unit is shown below as a quick mL reference. Your syringe may use a different line spacing, so read the printed scale on your own device.

0.3 mL (30 units)

UnitsmL
5 units0.050 mL
10 units0.10 mL
15 units0.15 mL
20 units0.20 mL
25 units0.25 mL
30 units0.30 mL

0.5 mL (50 units)

UnitsmL
5 units0.050 mL
10 units0.10 mL
15 units0.15 mL
20 units0.20 mL
25 units0.25 mL
30 units0.30 mL
35 units0.35 mL
40 units0.40 mL
45 units0.45 mL
50 units0.50 mL

1.0 mL (100 units)

UnitsmL
5 units0.050 mL
10 units0.10 mL
15 units0.15 mL
20 units0.20 mL
25 units0.25 mL
30 units0.30 mL
35 units0.35 mL
40 units0.40 mL
45 units0.45 mL
50 units0.50 mL
55 units0.55 mL
60 units0.60 mL
65 units0.65 mL
70 units0.70 mL
75 units0.75 mL
80 units0.80 mL
85 units0.85 mL
90 units0.90 mL
95 units0.95 mL
100 units1.00 mL

See the scale

These reference images show the common U-100 syringe sizes and the relationship between units, mL, and the strength printed on a vial.

U-100 0.3 mL insulin syringe with 30 unit capacity and printed lines
U-100 0.3 mL insulin syringe with 30 unit capacity and printed lines. Math only. The vial label decides the strength.
U-100 0.5 mL insulin syringe with 50 unit capacity and printed lines
U-100 0.5 mL insulin syringe with 50 unit capacity and printed lines. Math only. The vial label decides the strength.
U-100 1 mL insulin syringe with 100 unit capacity and printed lines
U-100 1 mL insulin syringe with 100 unit capacity and printed lines. Math only. The vial label decides the strength.
Diagram showing how U-100 units and mL measure liquid, while vial strength connects mL to mg
Diagram showing how U-100 units and mL measure liquid, while vial strength connects mL to mg. Math only. The vial label decides the strength.

Print this chart

The one-page PDF uses the same calculated values as this table. Keep the strength on your vial beside it when you check the math.

Download the Semaglutide PDF

Keep learning

Go back to the interactive calculator or check a common dose answer.

  1. 01Semaglutide calculator
  2. 02How many units is 0.25 mg of semaglutide?
  3. 03How to read an insulin syringe
  4. 04Insulin syringe sizes

Sources

The medical and device facts on this page come from these sources. Each entry shows the date we accessed it.

  1. 01 Ozempic (semaglutide) US Prescribing Information · Novo Nordisk, 05/2026. Accessed 2026-09-28.
  2. 02 Wegovy (semaglutide) US Prescribing Information · Novo Nordisk, 06/2026. Accessed 2026-09-28.
  3. 03 Technical Data Sheet – Insulin Syringes · embecta, Rev B, 12/2025. Accessed 2026-09-28.
  4. 04 Injection technique guide · embecta, ©2025, EMB-05148. Accessed 2026-09-28.
  5. 05 Getting Started booklet · embecta, ©2023. Accessed 2026-09-28.
  6. 06 SafetyGlide Insulin Syringes quick reference guide · embecta. Accessed 2026-09-28.
  7. 07 ISO 8537:2016, sterile single-use insulin syringes · International Organization for Standardization, 2016. Accessed 2026-09-28.
  8. 08 FDA alerts about dosing errors with compounded semaglutide · U.S. Food and Drug Administration, 07/26/2024. Accessed 2026-09-28.
  9. 09 FDA clarifies policies for compounders as GLP-1 supply stabilizes · U.S. Food and Drug Administration, 04/01/2026. Accessed 2026-09-28.
  10. 10 FDA's concerns with unapproved GLP-1 drugs used for weight loss · U.S. Food and Drug Administration, 10/01/2026. Accessed 2026-10-01.