What is room temperature in degrees Celsius?

• A. 20 degrees Celsius
• B. 25 degrees Celsius
• C. 30 degrees Celsius
• D. 23 degrees Celsius

Answer: (D)

Room temperature refers to the typical indoor temperature people find comfortable, and in many scientific and everyday contexts it’s treated as a range around the mid-20s Celsius. A common practical convention is about 20–25°C, with 23°C often used as a representative standard because it sits right in the middle of that comfortable range. It reflects a typical indoor environment without being too cool or too warm.

The other numbers are still in the general ballpark, but they don’t as well capture the commonly used mid-point: 20°C is a bit cooler, 25°C is a bit warmer, and 30°C is clearly too hot for room conditions. So 23 degrees Celsius best represents room temperature in many contexts.