Find the concentration
Divide the labeled mg by its corresponding mL. Always use numbers from the same label statement.
mg ÷ mL = mg/mLFREE TOOL · NO ACCOUNT NEEDED
Semaglutide dosage calculator
Convert your prescribed semaglutide amount using the concentration printed on your liquid vial. See both the liquid volume and syringe reading, without assuming a standard concentration.
Your label numbers. A transparent calculation.
mg, mL and syringe markings — explained.
Calculated in your browser. Inputs are not saved.
A little clarity, before you calculate
Milligrams measure the amount of medicine. Milliliters measure liquid volume. Syringe units are markings on a specific scale — they are not milligrams.
Understand the three unitsFor labeled liquid vials only. This tool does not calculate pen clicks, choose a dose, or give mixing instructions.
LABEL → CONVERSION
Your unit calculator
Demonstration only: fictional liquid values, not a medication label or recommended dose. Edit the example, or use your own label.
Results update automatically as you change valid values.Example result — not for injection
20units
0.2mL
- 10 mg ÷ 2 mL = 5 mg/mL
- 1 mg ÷ 5 mg/mL = 0.2 mL
- 0.2 mL × 100 = 20 units
Values are displayed to up to 8 significant figures. Display precision is not measurement accuracy.
Math only, not an instruction to inject. Verify the label, prescription and result with your pharmacist. If anything differs, stop and ask.
THE MATH, MADE VISIBLE
Three units. Three simple steps.
Every result shows the concentration, the liquid volume, and the equivalent markings.
Convert mg to mL
Divide the prescribed amount by the concentration. This gives a mathematical liquid volume.
mg ÷ (mg/mL) = mLRead the syringe scale
Multiply the volume by markings per mL. The same volume has different readings on different scales.
mL × scale = unitsCOMMON QUESTIONS
Semaglutide conversion questions
Why is there no standard semaglutide units chart?
Different liquid concentrations produce different volumes for the same amount in mg. FDA has reported dosing errors involving confusion among mg, mL and units in compounded semaglutide products.
Can I use numbers from an old vial?
Only use the concentration on the vial you are currently checking. A refill or different pharmacy may supply a different concentration. Ask your pharmacist if the label or directions have changed.
Does this calculate Ozempic or Wegovy pen clicks?
No. Brand-name pen devices have their own product instructions. Syringe units are not pen clicks. This tool does not convert clicks, alter a pen dose, or provide pen extraction instructions.
What if the result differs from my pharmacy directions?
Do not use this result to override the directions. Stop and contact the dispensing pharmacist or prescriber to check the concentration, units and syringe type together.
Sources & scope
The FDA semaglutide alert directly concerns this page’s conversion risks. Sources do not constitute endorsement of this calculator.
FDA: dosing errors with compounded injectable semaglutideFDA: concerns with unapproved GLP-1 drugsLast updated: 2026-10-10 · Editorial check; not a clinical review.