1 mg Semaglutide in Units: Syringe Chart

How many syringe units 1 mg of Semaglutide is, for every common vial size and water volume, with the math shown.

Medical review pendingGLP-1 agonistUpdated 20 Oct 2026

Amount: 1 mg
At 5 mg/mL: 20 units; e.g. 10 mg vial + 2 mL
At 10 mg/mL: 10 units; e.g. 20 mg vial + 2 mL
Syringe: U-100; 100 units = 1 mL

1 mg in units at common mixes

Units on a U-100 syringe (100 units = 1 mL) for a 1 mg amount, by vial size and water added. Concentration = vial mg ÷ mL of water; units = dose ÷ concentration × 100.

1 mg of Semaglutide in syringe units
Vial	Water	Concentration	Units for 1 mg	Volume
2 mg	1 mL	2 mg/mL	50 u	0.50 mL
2 mg	2 mL	1 mg/mL	100 u	1.00 mL
2 mg	3 mL	0.667 mg/mL	150 u (over 1 mL)	1.50 mL
3 mg	1 mL	3 mg/mL	33.3 u	0.33 mL
3 mg	2 mL	1.5 mg/mL	66.7 u	0.67 mL
3 mg	3 mL	1 mg/mL	100 u	1.00 mL
5 mg	1 mL	5 mg/mL	20 u	0.20 mL
5 mg	2 mL	2.5 mg/mL	40 u	0.40 mL
5 mg	3 mL	1.667 mg/mL	60 u	0.60 mL
10 mg	1 mL	10 mg/mL	10 u	0.10 mL
10 mg	2 mL	5 mg/mL	20 u	0.20 mL
10 mg	3 mL	3.333 mg/mL	30 u	0.30 mL
15 mg	1 mL	15 mg/mL	6.7 u	0.07 mL
15 mg	2 mL	7.5 mg/mL	13.3 u	0.13 mL
15 mg	3 mL	5 mg/mL	20 u	0.20 mL
20 mg	1 mL	20 mg/mL	5 u	0.05 mL
20 mg	2 mL	10 mg/mL	10 u	0.10 mL
20 mg	3 mL	6.667 mg/mL	15 u	0.15 mL

Calculator and full dosing table

Preset to 1 mg in a 10 mg vial. Change any value; the table below the result updates with it.

1Vial size

2Bacteriostatic water added

3Dose per injection

4Syringe (U-100)

Draw to

20units

= 0.2 mL on a 1 mL U-100 insulin syringe

10 mg vial2 mL water1 mg dose

Concentration: 5 mg/mL
Doses per vial: 10
Weeks (1 dose/wk): 10

Math only. It does not recommend a dose.

Dosing table for a 10 mg vial

Syringe units (U-100) for each dose, by how much bacteriostatic water you add.

Semaglutide: U-100 syringe units per dose for a 10 mg vial
Dose	1 mL water	2 mL water	2.5 mL water	3 mL water
0.25 mg	2.5	5	6.25	7.5
0.5 mg	5	10	12.5	15
1 mg	10	20	25	30
1.5 mg	15	30	37.5	45
2 mg	20	40	50	60
2.5 mg	25	50	62.5	75
5 mg	50	100	125	150

How the math works

Concentration is the vial's milligrams divided by the water you add. Volume to draw is your dose divided by that concentration. On a U-100 syringe, 1 mL is 100 units, so units = mL × 100.

10 mg ÷ 2 mL = 5 mg/mL
1 mg ÷ 5 mg/mL = 0.2 mL
0.2 mL × 100 = 20 units

20 units · 0.2 mL · 1 mg from 10 mg + 2 mL

Math only. The amounts in these tables are reference values for the arithmetic, not dose recommendations.

Where a figure of 1 mg appears in semaglutide labels and trials

Ozempic label states: Each prefilled pen contains 4 doses of 1 mg.^[3]

Ozempic label states: To reduce the risk of sustained eGFR decline, end-stage kidney disease and cardiovascular death, increase the dosage to 1 mg once weekly after at least 4 weeks on the 0.5 mg dosage.^[3]

Ozempic label states: Recommended Maintenance Dosage in Patients with Type 2 Diabetes Mellitus and Chronic Kidney Disease Increase the dosage to the maintenance dosage, 1 mg once weekly, after at least 4 weeks on the 0.5 mg dosage.^[3]

How many units is 1 mg of semaglutide in each vial

Units for a dose of 1 mg by vial size at 1 / 2 / 3 mL of water (U-100): 2 mg vial: 50 / 100 / 150 (over one 1 mL syringe); 3 mg vial: 33.33 / 66.67 / 100; 5 mg vial: 20 / 40 / 60; 10 mg vial: 10 / 20 / 30; 15 mg vial: 6.67 / 13.33 / 20; 20 mg vial: 5 / 10 / 15; 30 mg vial: 3.33 (hard to measure accurately) / 6.67 / 10.

Calculated from dose mg 1; vial mg 2, 3, 5, 10, 15, 20, 30; water mL 1, 2, 3; u100 units per mL 100. Formula: units = doseMg / (vialMg / waterMl) x 100; flag units < 5 or > 100

Full 1 mg doses in each vial size (one dose a week means the same number of weeks): 2 mg vial: 2 doses; 3 mg vial: 3 doses; 5 mg vial: 5 doses; 10 mg vial: 10 doses; 15 mg vial: 15 doses; 20 mg vial: 20 doses; 30 mg vial: 30 doses.

Calculated from dose mg 1; vial mg 2, 3, 5, 10, 15, 20, 30; doses per week 1. Formula: doses = floor(vialMg / doseMg)

Is 1 mg a labelled semaglutide amount

Labelled injectable semaglutide totals per pen are 2, 4, 8 and 9.6 mg; against a figure of 1 mg: 2 mg is above it, 4 mg is above it, 8 mg is above it, 9.6 mg is above it.

Calculated from figure mg 1; labelled pen totals mg 2, 4, 8, 9.6. Formula: compare figureMg with each labelled pen total

Common questions

How many units is 1 mg of semaglutide?

1 mg is 20 units from a 10 mg vial in 2 mL, 40 units from a 5 mg vial in 2 mL and 10 units from a 20 mg vial in 2 mL.

Calculated from dose mg 1; mixes vial mg 10, water mL 2; vial mg 5, water mL 2; vial mg 20, water mL 2. Formula: units = doseMg / (vialMg / waterMl) x 100

Is 1 mg a recommended dose of Semaglutide?

This page is math only. It converts an amount into syringe units and does not recommend a dose. See the dosage page for what studies used.

More on Semaglutide

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.Side effectsWhat labels and studies report, and what is unknown.BenefitsClaimed benefits next to what published studies measured.How it worksTarget, mechanism and how long it acts, from the label or studies.OralStudies that gave Semaglutide as pills and capsules, and what is approved.

Sources

1Metric (SI) Prefixes (NIST Reference on Constants, Units, and Uncertainty)National Institute of Standards and Technology (NIST) · 2025physics.nist.govAccessed 2 Oct 2026
2BASAGLAR (insulin glargine) injection, prescribing information (DailyMed)U.S. Food and Drug Administration / DailyMed (Eli Lilly and Company label) · 2026dailymed.nlm.nih.govAccessed 2 Oct 2026
3OZEMPIC prescribing information (FDA label)FDA label, DailyMed · current labeldailymed.nlm.nih.govAccessed 2 Oct 2026

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