How many units is 1.7 mg of semaglutide?

It depends on your vial’s strength in mg/mL: on a U-100 insulin syringe, units = mg ÷ (mg/mL) × 100, so 1.7 mg of semaglutide is a different number of units on every vial. Read the mg/mL on your pharmacy label, then find its row below or enter it in the semaglutide units calculator.

If you use Wegovy, there’s nothing to convert: the label lists 1.7 mg as its own single-dose pen and syringe with the dose already set. And 1.7 mg isn’t an Ozempic dose at all, so “units of Ozempic” has no answer for it.

1.7 mg in units at example strengths

These strengths are examples: the ones the semaglutide 5 mg vial and semaglutide 10 mg vial pages make with 1, 2 or 2.5 mL of water. They aren’t recommendations. Your vial is whatever strength the pharmacy made.

How many mL and U-100 units 1.7 mg is at each strength.

Strength	Volume	Units (U-100)
2 mg/mL	0.85 mL	85 units
2.5 mg/mL	0.68 mL	68 units
4 mg/mL	0.425 mL	42.5 units
5 mg/mL	0.34 mL	34 units
10 mg/mL	0.17 mL	17 units

The same amount is a different number of units at each strength, so check the mg/mL on your vial or pharmacy label. U-100 syringe: 100 units = 1 mL.

Compare the top and bottom rows: the weakest example strength needs several times as many units as the strongest for the same 1.7 mg. That spread is the whole problem with instructions written in units. If your row isn’t a whole number, ask your pharmacist which mark to draw to rather than rounding on your own.

One vial, worked through

As an example, here is a 10 mg vial mixed with 2 mL of water, with 1.7 mg as the amount on the prescription:

1. 1Strength once mixed10 mg ÷ 2 mL = 5 mg/mL
2. 2Volume for this amount1.7 mg ÷ 5 mg/mL = 0.34 mL
3. 3In syringe units0.34 mL × 100 = 34 units

An example of the arithmetic, not a dose. Use your own vial, water and the dose your prescriber gave you in the calculator.

Your pharmacy label should already state the mg/mL, so you shouldn’t have to work out the first step yourself. If it gives units but no mg/mL, call the pharmacy before you inject. To check where a reading falls on the barrel, use the syringe reader.

Where 1.7 mg sits on the labels

On the Wegovy injection label, 1.7 mg is both a step and a destination:

• The last escalation step. The label’s Table 1 runs 0.25 mg (weeks 1 to 4), 0.5 mg (weeks 5 to 8), 1 mg (weeks 9 to 12), then 1.7 mg for weeks 13 to 16, all labeled “Dosage Escalation” after the starting dose. “If patients do not tolerate a dose during dosage escalation, consider delaying dosage escalation for 4 weeks” (Wegovy label, section 2.2).
• A maintenance option. For weight reduction in adults, maintenance is “either 1.7 mg or 2.4 mg (recommended)”; for cardiovascular risk reduction, “either 2.4 mg (recommended) or 1.7 mg once weekly”; for children 12 and older, “either 2.4 mg (recommended), or 1.7 mg once weekly.” For MASH, “If patients do not tolerate the maintenance dosage of 2.4 mg once weekly, the dosage can be decreased to 1.7 mg once weekly” (section 2.2). In the SELECT heart trial, 8% of people on treatment at 1 year were on 1.7 mg (section 14.1).
• A fallback from the pill. For people who don’t tolerate Wegovy 25 mg tablets, the label says to “consider switching to WEGOVY injection 1.7 mg once weekly” (sections 2.3 and 2.5). See the Wegovy pill.
• Not on the Ozempic label. Ozempic’s doses are 0.25, 0.5, 1 and 2 mg, and “The maximum recommended dosage is 2 mg once weekly” (Ozempic label, section 2.2).

These are label facts, not advice. Follow your prescriber: they choose your dose and when it changes.

How the branded devices handle 1.7 mg

Sources: Wegovy label sections 3 and 16 and Instructions for Use; Ozempic label section 3 and Instructions for Use.

The 0.75 mL on the Wegovy device is not a volume to copy onto a compounded vial. Wegovy’s concentration is fixed by the label; a compounded vial’s isn’t, so the same 1.7 mg can be a very different volume.

Questions people ask