most ovens in Canada and the United States, along with a few other countries, are designed to use Fahrenheit instead of Celsius. This practice is due to historical reasons and the predominance of Fahrenheit measurements in traditional North American cooking methods.
When ovens were first introduced and became widespread in North America, Fahrenheit was the primary temperature scale used for various applications, including cooking and baking. Over time, this tradition became deeply ingrained in culinary practices, and most recipes, cookbooks, and cooking shows in North America have traditionally used Fahrenheit temperatures.
The United States has been slow to adopt the metric system, including Celsius, for everyday applications. While Canada has mostly transitioned to the metric system for many purposes, Fahrenheit temperatures remain widely used in the context of cooking and baking.
In contrast, most other countries that use the metric system predominantly rely on Celsius for cooking and baking temperatures. The Celsius scale is based on the freezing and boiling points of water, making it more straightforward for many people to understand and use in daily life.
It's essential to pay attention to the temperature units specified in recipes and cooking instructions to ensure accurate and successful cooking. Many modern ovens offer the option to switch between Fahrenheit and Celsius, allowing users to choose the temperature scale they prefer.