The recommended temperature for a refrigerator to keep food fresh and safe is generally between 35°F and 38°F (1.7°C to 3.3°C), with an ideal target around 37°F (3°C). This range slows bacterial growth and prevents food spoilage without freezing items like lettuce

. The U.S. Food and Drug Administration (FDA) advises that the refrigerator temperature should be at or below 40°F (4°C), but aiming slightly lower (35°–38°F) is better for food preservation

. In Celsius, the ideal fridge temperature range is about 1.7°C to 3.3°C, with some sources recommending keeping it close to 4°C for optimal freshness and energy efficiency

. To ensure accuracy, it is recommended to use a refrigerator thermometer to check different areas inside the fridge, as temperatures can vary within compartments

Summary:

• Ideal refrigerator temperature: 35°F to 38°F (1.7°C to 3.3°C)
• FDA recommended max: 40°F (4°C)
• Use a thermometer to verify actual temperature inside the fridge

Maintaining this temperature range helps keep food fresh longer and reduces the risk of bacterial growth that can cause foodborne illness