Home  ›  Free tools  ›  Pill Supply & Refill Date Calculator
Free tool

Pill Supply & Refill Date Calculator

Find out how many days of medication are left — and the date to refill before you run out.

Your supply

Enter your numbers to see how long the supply lasts and when to refill.

Running out of a medication over a weekend or holiday is stressful and avoidable. Enter how many pills are on hand and how many are taken per day, and this tool tells you the run-out date and a refill-by date with a few days to spare.

Common questions

How do I know when to refill a prescription?

Divide the number of pills on hand by how many are taken per day to get the days of supply, then set a reminder several days before that date. This tool calculates both the run-out date and a refill-by date for you.

How can I avoid running out of medication?

Refill a few days early, ask your pharmacy about automatic refills and 90-day supplies, and synchronize refills so all medicines come due on the same day. That turns many pharmacy trips into one.

This is a free planning and organization tool. It provides general estimates and information only, runs entirely in your browser, and is not medical, legal, or financial advice.

Do it all in one place

These free tools each do one job. The Care Command Center keeps medications, appointments, costs, documents and an emergency sheet together in one calm dashboard.

Meet the Care Command Center