Shelf Life Calculator

How to use

Find expiry date: pick the production date, enter the shelf life (days/months/years), and get the expiry date plus days remaining.

Find production date: pick the expiry date and shelf life to work backwards.

Logic

• Days: add/subtract calendar days.
• Months/years: advance by calendar months, handling month-end correctly (e.g. Jan 31 + 1 month = Feb 28/29).

Note

The shelf life printed on the package prevails; results are for reference.