The ideal fridge setting is the coldest temperature that keeps food chilled but not frozen: around 3–4°C (37–40°F), which is usually the middle number on the dial (e.g., 3 on a 1–5 scale or 4 on a 1–7 scale).

Best basic setting

  • Aim for 3–4°C (37–40°F) in the main fridge compartment.
  • Freezer should be about -18°C (0°F).
  • On a numbered dial:
    • 1–5 scale: start at 3 (middle) and adjust if needed.
* 1–7 scale: start at **4** (middle) and adjust if needed.

What the numbers actually mean

Many people assume “1 is cold, 7 is warm”, but it’s usually the opposite.

  • Higher number = colder in most fridges (5 or 7 is the coldest).
  • The very highest setting can over-chill and start freezing some foods, so daily use is better at a middle setting once the temperature is stable.

Simple setup steps

  1. Set the dial to the middle number (3 of 5, or 4 of 7).
  1. Place a cheap fridge thermometer on a middle shelf, away from the door.
  1. Wait 24 hours after changing the setting, then check:
    • Above 5°C → turn the dial one step colder.
 * Below 1–2°C and things are icing up → turn the dial **one step warmer**.

Extra tips for better cooling

  • Don’t pack the fridge completely full; cold air needs space to circulate.
  • Keep the door closed as much as possible and check the seal for gaps.
  • In hot summers, you may need one step colder on the dial to stay near 3–4°C.

TL;DR: For “what setting should a fridge be on”, start with the middle number on the dial and confirm you’re around 3–4°C (37–40°F) inside; adjust one click at a time if it’s too warm or starts freezing food.

Information gathered from public forums or data available on the internet and portrayed here.