The ideal temperature for a refrigerator is between 35°F and 38°F (or 1.7°C to 3.3°C)
. However, according to Home Depot, the optimal temperature for keeping foods cold is 37°F (2.8°C)
. It is recommended to put a thermometer inside the fridge to double-check the temperature, especially if the fridge is older
. It is important to keep the temperature below 40°F (4.4°C) to prevent food from spoiling
. Lowering the temperature to 33-35°F (0.6°C to 1.7°C) can increase the shelf life of food, but it may cause some items to freeze and get ruined