The formula for calculating Shelf Life Calculator is:

Remaining Shelf Life Percentage = (Remaining Shelf Life / Total Shelf Life) * 100

Where:

• Remaining Shelf Life is the time between the current date and the expiry date
• Total Shelf Life is the time between the manufacturing date and the expiry date

Shelf life is the amount of time that a product can be stored before it starts to deteriorate or becomes unsafe to use. Calculating shelf life involves determining the total length of time that a product can be stored, as well as the amount of time that has elapsed since it was manufactured.

For example, let’s say you have a food product with an expiry date of June 30th, 2023, and it was manufactured on January 1st, 2023. The total shelf life for this product would be the time between the manufacturing date and the expiry date, which is 180 days (6 months).

To determine the remaining shelf life of the product, you would need to know the current date. Let’s say the current date is April 6th, 2023. The amount of time that has elapsed since the manufacturing date would be 96 days (January 1st to April 6th).

To calculate the remaining shelf life percentage, you would divide the amount of time remaining by the total shelf life and multiply by 100. So, in this case, the remaining shelf life would be 84 days (June 30th minus April 6th), and the remaining shelf life percentage would be (84 / 180) * 100 = 46.67%.

This calculation can be useful for determining whether a product is still safe to use or whether it should be discarded. In general, it’s important to follow the expiry date and storage instructions provided by the manufacturer to ensure the product remains safe and effective for the duration of its shelf life.