Prescription Refill Date Calculator
Health & FitnessCalculate how many days your current medication supply will last and when you need a refill.
Days Until You Should Reorder
Days from now you should submit your refill request, allowing a buffer before you run out.
Days of Supply Remaining
30.0
How many days your current supply will last at this dosing schedule.
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Health & Fitness calculators
Frequently Asked Questions
Why include a reorder buffer?
A buffer of a few days accounts for pharmacy processing time, insurance approval delays, or shipping time for mail-order prescriptions, so you do not run out while waiting.
What if I take a partial dose, like half a pill?
Enter your doses per day as a decimal, such as 0.5 for half a pill per day, and the calculator will adjust the days of supply accordingly.
Does this account for missed doses?
No, this calculator assumes consistent dosing exactly as scheduled. If you regularly miss or skip doses, your actual supply may last longer than calculated.
Should I rely on this instead of refill reminders from my pharmacy?
This is a general planning tool. Always follow the specific refill instructions and reminders provided by your pharmacy or prescriber for your actual medication.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Prescription Refill Date Calculator on any site — no code needed. Customize colors, remove branding, and track usage.
