Free tool
GLP-1 unit converter: mg, mL, and syringe units
Enter your vial strength, water added, and prescribed dose to see the exact units to draw.
Total mg in the vial
Bacteriostatic water you mixed in
The dose your clinician set
Enter your vial strength and the water you added to begin.
Worked example
A 30 mg vial mixed with 2 mL of water is 15 mg/mL. A 2.5 mg dose is 2.5 ÷ 15 = 0.167 mL, which is about 17 units on a U-100 syringe. Change the water you add and the units change too, which is exactly why there is no single universal “mg to units” number.
This is a math helper for a U-100 insulin syringe (100 units = 1 mL). It converts a dose your clinician already prescribed; it does not tell you what dose to take, and dosing errors with compounded products can be dangerous. Always confirm your vial strength, concentration, and dose with your prescriber or pharmacy. See units vs mg explained and compounded vs branded.
This tool is general education, not medical advice, and its estimates do not account for your personal medical history. Decisions about your medication and treatment belong with a licensed clinician.
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