Peptide Supply Calculator.
Your amount, schedule and duration → total needed and whole vials per size.
How it works.
Enter your own amount
Type the amount per administration in mcg or mg. The field starts empty on purpose and nothing is loaded from a compound list: the tool only multiplies the number you give it.
Describe the schedule
Set how many administrations happen on each day, then either the days per week or a repeat interval such as every 3 days, and how many weeks the plan runs.
Add one or two vial sizes
Enter the milligrams in each vial. With a second size you can compare how many of each the same total would take.
Read the total and the vial count
You get the total amount for the period and the vials per size, rounded up because part of a vial still means a whole vial. The formula lines show every step, including what is left over.
FAQ.
Does this calculator suggest an amount?
No. The amount field starts empty and there is no compound picker that fills one in. The tool multiplies the amount, frequency and duration you enter, then divides by the vial size you enter.
Why are vials rounded up?
Vials only come whole. If the total works out to 5.6 vials' worth, covering it takes 6 vials, and the tool shows how much would be left over.
How does the every N days option count?
It treats day 1 as an administration day and repeats every N days after that, within the number of weeks you set. Four weeks is 28 days, so every 3 days gives days 1, 4, 7 and so on up to day 28: 10 administration days.
Does it allow for waste?
No. It assumes every microgram in a vial can be drawn and used. In practice a little is lost to syringe dead space and to the last draw from each vial, so real use can need slightly more than the arithmetic shows.
Why does it convert mcg to mg?
Vial sizes are entered in milligrams, so an amount typed in micrograms is divided by 1,000 before the division by vial size. 1 mg is 1,000 mcg; the total is shown in both.
PepCue turns these numbers into a private schedule with reminders, vial math, and a provider-ready record. Free.