Prescription Refill Calculator
Calculate prescription refill date and days supply
For informational purposes only. Always consult your healthcare provider or pharmacist for medication guidance.
Table of Contents
How to Use
- Enter the date your prescription was filled
- Enter the quantity of medication dispensed
- Enter how many units you take per day
- Click calculate to see your refill schedule
Understanding Days Supply
Days supply is the number of days a prescription will last based on the quantity dispensed and the prescribed dosage.
Frequently Asked Questions
- How many days early can I refill my prescription?
- Most insurance plans allow refills when 75-80% of the days supply has passed. For a 30-day prescription, this is typically day 22-24.