400F

400F refers to a temperature of 400 degrees Fahrenheit, commonly written as 400°F. The Fahrenheit scale is primarily used in the United States and a few other regions. Converting to Celsius, 400°F is (400 − 32) × 5/9 ≈ 204.44°C. In Kelvin, this is about 477.59 K.

In practical terms, 400°F is a high oven setting used for various cooking and baking tasks. It is frequently chosen for baking pizzas, roasting vegetables, browning foods, and finishing certain dishes. Many recipes specify preheating an oven to 400°F, and home ovens commonly provide a range that includes this temperature, often up to 450–500°F.

Outside cooking, 400°F can appear in technical or product specifications in contexts where the Fahrenheit scale is used. In such cases, 400°F denotes a temperature condition or operating limit rather than a property of a material by itself. The essential meaning remains that of a numeric temperature value measured on the Fahrenheit scale.

See also: Fahrenheit, Celsius, Kelvin, Temperature.