The ideal temperature for a refrigerator should be between 37°F (3°C) and 40°F (5°C) to keep food fresh and safe from bacterial growth

. More specifically, aiming for around 37°F (3°C) is often recommended as optimal for preserving food quality without freezing produce

. Temperatures above 40°F (4°C) are considered unsafe as they allow bacteria to multiply rapidly, increasing the risk of foodborne illness

. In Celsius, the recommended fridge temperature range is generally 0°C to 5°C, with many experts advising to keep it below 5°C to avoid the "danger zone" where bacteria grow quickly

. Freezers should be set at 0°F (-18°C) or lower to maintain food safety and quality

. Because fridge thermostats can be inaccurate, using a fridge thermometer to monitor the actual temperature is advisable to ensure it stays within the safe range

. Summary:

• Ideal fridge temperature: 37°F (3°C) to 40°F (5°C)
• Safe range: 34°F (1°C) to 40°F (5°C)
• Avoid going above 40°F (5°C) to prevent bacterial growth
• Use a fridge thermometer for accuracy
• Freezer temperature: 0°F (-18°C) or below

This temperature range helps maximize food freshness, safety, and nutrient retention