Make the numbers instantly clear.
Enter the values you already have and the calculator will show the U-100 syringe marking, volume and concentration in plain language.
The calculator should be the last step, not the first.
Use it to convert numbers you already have from a reliable source. It does not choose the dose, route or schedule.
Enter what you know
We’ll take care of the maths. Change any value and the answer updates instantly.
Example: a 30 mg vial + 3 mL liquid + a 4 mg amount. Enter those three numbers below and the calculator shows the U-100 syringe marking.
See the draw position
The fill and marker move automatically with your result.
Calculated draw
Here’s the result in plain terms.
With 20 mg in 3 mL, the 2 mg amount you entered equals 30.0 units on a U-100 syringe.
How was this calculated?
First, vial amount ÷ liquid added gives the concentration. Then the amount you want ÷ concentration gives the volume in mL. On a U-100 syringe, 1 mL = 100 units.
See what changes when you add more or less water
There is not one automatic water volume for every vial. More liquid makes the mixture less concentrated and increases the syringe draw for the same amount; less liquid makes it more concentrated and reduces the draw.
Plan a dose that changes over time
Add each stage of an existing schedule. The planner totals the amount across the full period rather than assuming the same amount every week.
Mixing & administration
A simple visual walkthrough of reconstitution, common administration routes and a basic injection overview.
