Vial Dose Calculator
Know exactly how much is left in a vial after every dose you log.
Try the calculator, free →Beyond a single calculation
A single dose calculation tells you what to draw right now. A vial dose calculator goes one step further: it remembers the vial you reconstituted, and reduces its remaining amount every time you log a dose against it -- so you always know how much is left, and roughly how many doses remain, without doing the subtraction yourself.
Worked example
A 10 mg vial reconstituted with 2 mL (5 mg/mL), with three 1 mg doses logged so far:
- Started with: 10 mg
- After dose 1 (1 mg): 9 mg remaining
- After dose 2 (1 mg): 8 mg remaining
- After dose 3 (1 mg): 7 mg remaining
At 5 mg/mL, that's 1.4 mL still left in the vial -- enough for seven more 1 mg doses.
A safety check, not just a running total
Tracking a vial's remaining amount isn't just bookkeeping -- it means PeptOnyx Calculator can warn you before you log a dose that's larger than what's actually left, instead of letting the remaining amount silently go negative.