Refill date timelines
See the first covered date, suggested request date, last covered date and next coverage date in one clear timeline.
Pharmacy Refill Calculator
Version 1.0 · iOS & Android
Prescription refill calculator with every step explained.
Calculate refill dates, days supply and quantities for common dosage forms. Review the formula, save reusable work locally and make arithmetic easier to check.
Arithmetic reference only. Results do not guarantee refill eligibility and are not medical, prescribing or legal advice.
6 focused tools
Dates, supply and quantities
Transparent math
Formulas and assumptions shown
Private by design
No account required
Built for clear checking
The pharmacy math you use, organized into focused workflows.
Days supply calculations
Calculate days supply for tablets, capsules and liquids with common frequencies and unit conversions.
Quantity planning
Work backwards from a 30, 60, 90 or custom-day target to the quantity needed, with explicit rounding.
Every step is visible
Expand Show the Math to review the formula, substituted values, assumptions and rounding behind a result.
Real dosage forms
Use dedicated workflows for tablets, oral liquids, inhalers, nasal sprays and eye or ear drops.
History and favorites
Save generic calculations and reusable templates locally, without creating an account.
Inside version 1.0
From a quick answer to a fully explained calculation.
Swipe on a phone or browse the full gallery on a larger screen.
Made for verification
Fast enough for the counter. Detailed enough to audit.
A useful prescription refill calculator should make its reasoning easy to inspect. Every valid result includes an audit trail: the inputs, formula, substituted values, unit conversions, assumptions and rounding rule.
- 1
Choose a calculation
Start with refill date, days supply, quantity, inhaler or drops.
- 2
Enter structured inputs
Only complete, unambiguous inputs produce a result.
- 3
Check the result and math
Review the calculation steps and verify the answer before using it.
Private by default.
No account is required. Medication names are optional, and saved history, favorites, preferences and selected photos remain on your device.
- No remote medication database
- No medication values in analytics
- Delete local history from Settings
Important
An arithmetic reference, not a refill decision.
Pharmacy Refill Calculator does not provide medical, prescribing or legal advice. Results do not guarantee refill eligibility. Always verify calculations and applicable requirements with a licensed pharmacist, prescriber, pharmacy and payer.
Prescription refill calculator FAQs
What does the Prescription Refill Calculator calculate?
It calculates refill-date timelines, days supply and quantities needed. It also includes workflows for inhalers, sprays and eye or ear drops. Results include the formula and assumptions used.
Does a calculated date guarantee that a prescription can be refilled?
No. A result is an arithmetic reference only. Actual refill eligibility depends on the prescription, prescriber, pharmacy, payer and applicable law. Verify the result with a licensed pharmacist or the relevant organization.
Can I calculate 30, 60 and 90 day prescription quantities?
Yes. Choose a common target supply or enter a custom number of days. The quantity calculator shows the raw result and the selected rounding rule.
Does the app support liquids, inhalers and drops?
Yes. Version 1.0 includes calculators for tablets and capsules, oral liquids, inhalers and nasal sprays, eye or ear drops, and reverse quantity planning.
Is my medication information private?
Medication names are optional. Saved calculations, favorites, preferences and selected photos are stored locally on your device. The app does not require an account or use a remote medication database.
Is the Prescription Refill Calculator medical advice?
No. It is an arithmetic reference tool for pharmacists, technicians and students. It does not provide medical, prescribing or legal advice and should not be used as the sole basis for a clinical or dispensing decision.
Version 1.0