Supply Calculator

Plan how long a set of vials will last. Pick the vial sizes and the amount used, and the calculator returns the number of doses, weeks and months.

Vials mg

Pick the mass printed on the vial label and how many of that size. Add a row for each different size.

Schedule

Choose an amount for each dose on set days of the week, or a total amount per week.

Amount per dose

Days of the week

Pick every day a dose is used.

Supply lasts

—weeks

Total in vials—

Used per week—

Number of doses—

Weeks—

Months—

How it works Total = sum of all vial masses. Used per week = amount per dose × days per week. Weeks = total ÷ used per week. Months = weeks × 7 ÷ 30.4. This is arithmetic only, so it ignores any amount lost when drawing. Check any result by hand before relying on it.

Mixed vials and time The calculator counts milligrams, not shelf life. A mixed vial is commonly kept for about 30 days, and up to 8 weeks for robust sequences. Common practice The storage guide has the full table.

For Research Use Only This page reports what published studies and researchers have found. It is information, not advice.