How long does t take for milk to go off?

Milk typically lasts about 5 to 7 days past its sell-by date when stored properly in the refrigerator. However, its freshness can be influenced by factors such as temperature, exposure to air, and how often the container is opened. Once opened, it's best to consume milk within a week for optimal quality. Always check for signs of spoilage, such as off odors or changes in texture, before consuming.