what temp is a freezer supposed to be
A home freezer is supposed to be at about 0°F (‑18°C) for safe, long‑term food storage.
Ideal freezer temperature
- Target setting: 0°F (‑18°C).
- Safe range for most home freezers: roughly ‑16°C to ‑22°C (about 3°F to ‑7°F), but you should still aim for 0°F (‑18°C).
- Above 0°F (‑18°C), food may still be frozen, but long‑term quality and safety can drop faster.
Why 0°F (‑18°C)?
- At around ‑18°C, bacterial growth is essentially stopped and food can be stored much longer.
- This setting balances food safety with reasonable energy use and appliance lifespan.
Quick how‑to check
- Put an appliance thermometer in the freezer (ideally between packages, not by the door).
- Wait a few hours, then read the temperature.
- Adjust the dial slightly up or down, wait again, and recheck until it’s near 0°F (‑18°C).
Mini FAQ
- Is ‑10°F (‑23°C) too cold?
Not unsafe; some foods like ice cream are even nicer a bit colder, but going much lower than needed can waste energy.
- Is 10°F (‑12°C) okay?
Food will freeze, but it’s warmer than recommended for long‑term storage; quality and safety margin are worse than at 0°F.
Information gathered from public forums or data available on the internet and portrayed here.