How to use the Days Supply Calculator
- Enter the number of tablets/capsules (or mL) you have.
- Enter the dose per intake and how many times a day.
- See how many days it lasts and the date it will run out.
- Or enter course days to find the total quantity needed.
Formula
Days supply = Quantity ÷ (Dose per intake × Times per day)
Quantity needed = Dose × Times per day × Days
Example: 60 tablets, 1 tablet twice a day → 60 ÷ 2 = 30 days.
Tips for caregivers
- Reorder a few days before the run-out date to avoid missed doses.
- Use our medicine timetable approach: write each dose time on the strip or a chart.
- Never change a dose without asking the prescribing doctor.
Frequently asked questions
Does this work for syrups?
Yes. Enter the bottle volume in mL as the quantity and the dose in mL.