How is the expiry date calculated from shelf life?

Enter the production date and shelf life (in days, months or years) and click Calculate to get the expiry date and days remaining. A negative number of days remaining means the product has expired.

What units are supported and how do they convert?

Days, months and years. For example, a 12-month shelf life equals 1 year — choose the unit matching the label. Months are added as calendar months, and the system handles month-end dates automatically.

Can food past its expiry date still be eaten?

The shelf life is the manufacturer’s promised best-before period. For expired food, judge by packaging condition and storage conditions. Some foods (e.g. dried goods, canned food) may still be safe if the packaging is intact and storage conditions are met — use your own judgement.

Does this calculator also work for product shelf life?

Yes. Besides food, it also works for cosmetics, daily necessities and other goods — just enter the production date and shelf life.

Shelf Life Calculator — Expiry Date and Days Remaining

Calculate the expiry date of food or products

Production date

Shelf life

Unit

How to Use

Enter the production date and shelf life to calculate the expiry time, in days, months or years. To calculate a date difference, use the Date Calculator.