Calculator
Enter a concentration and an amount to see the volume.
How this works
The math is a single division: the amount you enter, converted to mg, divided by the concentration you enter. A U-100 insulin syringe holds 100 units per mL, so the volume in mL is multiplied by 100 to show an approximate unit reading. Nothing here is estimated or looked up - it only uses the two numbers you typed in.
What this tool does not do
- It does not tell you what dose to take, or how often
- It does not know your vial’s actual concentration - you enter it from the label
- It does not account for syringe markings other than a standard U-100 scale
- It does not replace checking the result against your label before use
FAQ
Does this tool tell me what dose to take?
No. It converts numbers you already have - a concentration and an amount - into a volume. It does not know or suggest a dose. Get your dose from your clinician or the medication label.
Where do I get the concentration number?
From the vial label, the pharmacy printout, or your clinician - it is not something to guess or estimate.
What syringe size does the units column assume?
A standard U-100 insulin syringe, where 100 units equals 1 mL. If your syringe is marked differently, use the mL figure instead and check with your pharmacist.
Can I save this calculation in Vialie?
This helper does not save anything. Vialie logs the entry itself - the label, date, and amount you actually used - as a record, not a calculator.
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Get Vialie for iPhone →This tool performs arithmetic only and is not medical advice. It does not diagnose, prescribe, or recommend a dose, concentration, or product. Confirm every value with your clinician, pharmacist, or the medication label.