Medication refill calculator
Running out of a medicine on a Friday evening is stressful and can be risky. Enter how many tablets are left and how many are taken each day; the calculator shows when each one runs out and when to order more.
This calculator only does the arithmetic. Never change a dose to make tablets last longer; ask the doctor or pharmacist if a medicine is running short.
What you type stays in this browser. Nothing is sent to our servers.
How long the pharmacy or doctor needs for a new prescription. 7 days is a safe default.
Refill plan
Enter a medicine, the tablets left and the doses per day to see the dates.
Tips
- Keep a few days' spare supply, especially before holidays and weekends.
- Ask the pharmacy whether repeat prescriptions can be lined up to run out on the same day.
- For medicines taken only when needed, count them weekly instead.
- Never share or borrow medicines, even if they look the same.
How do I work out when my medication will run out?
Divide the number of tablets left by the number taken each day. For example, 56 tablets at 2 a day last 28 days. Subtract the days the pharmacy needs, and that is the day to reorder.
What if the dose is half a tablet?
Enter 0.5 as the amount per dose. The calculator works with any number, including liquids if you count in doses or millilitres.
Does it remember my medicines?
The list stays only in this browser so you can come back to it. In a free care space the stock is tracked automatically as doses are ticked off, and the family gets a reminder when supply is low.
Let the app count the tablets for you
In a care space the stock goes down each time a dose is ticked off, and you get a reminder a week before a medicine runs out.