You can enter either shelf life or expiration date. The calculator updates the other value automatically.
Production date plus shelf life gives the expiration date.
This shelf life calculator and expiry date calculator helps you find a product expiration date from its production date and shelf life. It is useful for food items, cosmetics, medicines, chemicals, documents, warranties, subscriptions, and other products with a validity period.
How to use the shelf life and expiry date calculator
- Enter the production date or manufacturing date.
- Enter the shelf life in days, weeks, months, years, or years plus months.
- The expiry date or expiration date will be calculated automatically.
- You can also enter an expiry date to calculate total shelf life days.
What is shelf life?
Shelf life is the time period during which a product is expected to remain usable when stored correctly. An expiry date is the final date calculated from that shelf life. The actual safe period can depend on storage conditions, packaging, temperature, and product type.
Expiry date calculation example
If a product has a production date of 25 June 2026 and a shelf life of 6 months, the calculated expiry date is 25 December 2026. This tool can also calculate shelf life from a known expiration date.
Important note
This calculator is a date calculation tool only. For food, medicine, cosmetics, or chemical safety, always follow the product label, storage instructions, and professional guidance.