Prescription refill date calculator
Take the guesswork out of refill day.
Enter the date you picked up your prescription and the days supplied. We’ll do the calendar math; your pharmacy or insurer always has the final say.
Check a refill date
The calculation stays in this browser. We don’t put medication dates in the page address or save them.
Your estimate
- Supply through
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- Check about refill
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- Days left as of today
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- Quantity left after today’s dose
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Quantity estimates assume the container is used evenly across the stated days supplied. Missed, extra, changing, or as-needed doses will make the actual amount different.
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This is an estimate, not medical, pharmacy, insurance, or legal advice. Controlled substances and individual plans may follow different rules. Confirm before relying on this date.