What is a beyond-use date and how is it different from expiry?

Expiry applies to the unopened product. Once repackaged, reconstituted, or compounded, a shorter beyond-use date applies. The tool assigns the earlier of the manufacturer expiry and the repackage date plus your beyond-use limit.

What beyond-use limit should I use?

It comes from your own SOP and the applicable USP or pharmacopoeia rules for the dosage form. The tool does the date arithmetic; the assigned date never exceeds the original expiry.

First Expiry, First Out. Batch mode orders lots by soonest expiry so first-expiry stock is dispatched first, as expected under PPB Good Distribution Practice.

Free Tool

Expiry Date & Shelf Life Calculator

Enter a manufacturing date and shelf life in months to get the exact expiry date instantly. A free shelf life calculator and beyond-use date tool for repackaging, manufacturing, and quality control. Single item or a full batch in first-expiry-first order.

Manufacture Date

The date when the product was manufactured

Shelf Life (Months)

Product shelf life in months

This is a repackaged or compounded item (beyond-use date)

Calculated Results

Expiry Date

Total Days

Formatted Output

Common Use Cases

Repackaging

Assign beyond-use dates when repackaging bulk products into smaller units.

Stock rotation (FEFO)

Order a whole batch by soonest expiry so first-expiry stock moves first.

Quality control

Verify expiry dates and validate shelf-life claims during QC checks.

Working with temperature-sensitive stock? Pair this with the free MKT calculator and the stability budget calculator to defend shelf-life decisions after a temperature excursion.

Expiry and beyond-use dating: FAQ

How is the expiry date calculated?

The calculator adds the shelf life in whole months to the manufacture date, handling short months and leap years. So a product made on 31 January with a 1-month shelf life expires on 28 (or 29) February.

What is a beyond-use date (BUD) and how is it different from expiry?

The expiry date applies to the product in its original, unopened container. Once you repackage, reconstitute, or compound it, a shorter beyond-use date applies. Switch on the beyond-use option: the tool assigns the earlier of the manufacturer expiry and your repackage date plus the BUD limit.

What BUD limit should I use?

That comes from your own SOP and the applicable USP or pharmacopoeia rules for the dosage form. This tool does the date arithmetic; it does not set the clinical limit for you. The assigned date never exceeds the original expiry.

What does FEFO mean?

First Expiry, First Out. In batch mode, paste all your lots and the tool orders them by soonest expiry so the stock that expires first is dispatched first, which is the expectation under PPB Good Distribution Practice.

When should a Kenyan registration renewal start?

PPB product registrations run for 5 years. Start the renewal cycle about 6 months before expiry to avoid a market gap. Use the reminder button to add a calendar alert, or see our renewal and variations service.

How do I calculate expiry date from manufacturing date?

Enter the manufacturing date and the shelf life in months, then calculate. The tool adds the shelf life to the manufacturing date and returns the expiry date, total days, and a clean formatted output you can copy onto a label or batch record.

Does this work as a medicine expiry and shelf-life calculator in months?

Yes. This is a manufacturing date and expiry date calculator that doubles as a shelf-life calculator in months. As a pharmacist-led tool, it suits medicines, devices, and other regulated stock managed under PPB rules in Kenya, computing the expiry directly from the manufacturing date.

Can it work as a best before date calculator?

Yes. Enter the manufacturing date and the best before period in months and the tool returns the best before or expiry date. For an opened, repackaged, or compounded item, switch on the beyond-use option to apply a shorter assigned date.

How do I convert a manufacturing date to an expiry date for a whole batch?

Use batch mode to paste many lots at once, each with its manufacturing date and shelf life in months. The tool converts every manufacturing date to an expiry date and orders the lots by soonest expiry so first-expiry stock moves first.

Disclaimer: This tool calculates dates from standard calendar months. Always refer to manufacturer specifications, stability data, and your approved SOPs for the final expiry or beyond-use determination.

Registering or Renewing Products in Kenya?

Expiry and renewal dates drive your regulatory calendar. We register pharmaceutical products with the PPB, prepare the CTD/eCTD dossier, and handle renewals and variations so nothing lapses on the market.

Book a Consultation View Regulatory Services

Manufacturer outside Kenya? We act as your Local Technical Representative to the PPB. We also prepare CTD/eCTD dossiers and manage registration renewals and variations before they expire.