Free tools
Calculators for what you track.
Plain arithmetic, done right every time. No signup, nothing sent anywhere, and none of them recommend a compound, a dose, or a schedule.
Reconstitution calculator
Vial size + bacteriostatic water + target dose → the exact units to draw on a U-100 insulin syringe.
Vial run-out calculator
What's in the vial, your dose and how often you take it → full doses left, your last full-dose date, and when to reorder.
Half-life visualiser
A half-life, a dose and a schedule → a curve of how much of one dose is still there over time, as a percentage of one dose.
Syringe units converter
Your mixed vial strength and desired dose → the exact units and mL to draw on a U-100 insulin syringe.
Not medical advice. Every tool here does arithmetic on
the numbers you enter — none of them recommend a compound, a dose, or a schedule. Check any change
with your prescriber.