Measurement calculator
Pen & vial calculator
Calculate concentration and measurement from the values shown on your product and device. This tool does not select or recommend an amount.
Vial measurement
Enter the quantity in the vial, the liquid volume added and your independently determined target amount.
The calculator cannot determine what your target amount should be.
Calculated measurement
Enter all three values
Concentration—
U-100 scale equivalent—
Pen click measurement
This calculator uses the Thrive 3 ml pen format: 300 whole clicks when full (0.01 ml per click). Check the product and device labels before use.
Based on a fixed 3 ml cartridge containing 300 whole clicks.
The calculator cannot determine what your target amount should be.
Calculated whole-click setting
Enter both values
Exact calculation—
Amount at shown setting—
Theoretical target amounts—
Complete whole-click settings—
Important: This is an arithmetic and measurement tool only. It does not provide medical advice, assess suitability, recommend a dose or replace the product instructions, device manufacturer, pharmacist or qualified healthcare professional. Pen mode assumes a verified 3 ml cartridge with 300 whole clicks (0.01 ml per click). Check every value and the calibration of your exact device before relying on a result. Do not use a result if any entry or unit is uncertain.